ZHCSQ47 数据表 | 德州仪器 TI.com.cn

ZHCSQ47 March 2022 LP8764-Q1

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RQK|32
- MPQF572A

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zhcsq47_oa

6.6 BUCK1, BUCK2, BUCK3, and BUCK4 Regulators

Over operating free-air temperature range (unless otherwise noted). Voltage level refers to the AGNDx ground of the device.

POS	PARAMETER		TEST CONDITIONS	MIN	TYP	MAX	UNIT
Electrical Characteristics - Output Voltage
3.1a	V_{VOUT_Bx_Step}	Output voltage programmable step size	0.3 V ≤ V_{VOUT_Bx} < 0.6 V		20		mV
3.1b			0.6 V ≤ V_{VOUT_Bx}< 1.1 V		5
3.1c			1.1 V ≤ V_{VOUT_Bx} < 1.66 V		10
3.1d			1.66 V ≤ V_{VOUT_Bx} ≤ 3.34 V		20
3.3		Input and output voltage difference	Minimum voltage between PVIN_Bx and VOUT_Bx to fulfill the electrical characteristics	0.7			V
3.4a	V_{VOUT_Bx_Slew_Rate}	Output voltage slew-rate programmable range⁽⁵⁾⁽⁷⁾⁽⁹⁾	BUCKn_SLEW_RATE[2:0] = 000b	26.6	33.3	36.6	mV/µs
3.4b			BUCKn_SLEW_RATE[2:0] = 001b	17	20	22
3.4c			BUCKn_SLEW_RATE[2:0] = 010b	9	10	11
3.4d			BUCKn_SLEW_RATE[2:0] = 011b	4.5	5	5.5
3.4e			BUCKn_SLEW_RATE[2:0] = 100b	2.25	2.5	2.75
3.4f			BUCKn_SLEW_RATE[2:0] = 101b	1.12	1.25	1.38
3.4g			BUCKn_SLEW_RATE[2:0] = 110b	0.56	0.625	0.69
3.4h			BUCKn_SLEW_RATE[2:0] = 111b	0.281	0.3125	0.344
Electrical Characteristics - Output Current, Limits and Thresholds
3.6a	I_{OUT_Bx}	Output current⁽³⁾⁽⁴⁾	1-phase			5	A
3.6b			2-phase			10
3.6c			3-phase			15
3.6d			4-phase			20
3.7		Current balancing for multi-phase output	Mismatch between phase current and average phase current, I_{OUT_Bx} > 1 A / phase			20%
3.8	I_{LIM FWD PEAK Range}	Forward current limit (peak during each switching cycle) Programmable range		2.5		7.5	A
3.9	I_{LIM FWD PEAK Step}	Forward current limit step Size			1		A
3.10a	I_{LIM FWD PEAK Accuracy}	Forward current limit accuracy	I_LIM = 2.5 A, 3.5 A, 4.5 A, 3.0 V ≤ V_{PVIN_Bx} ≤ 5.5 V	-0.55		0.55	A
3.10b			I_LIM = 5.5 A, 6.5 A or 7.5 A 4.5 V ≤ V_{PVIN_Bx} ≤ 5.5 V	–10%		10%
3.10c			I_LIM = 5.5 A, 6.5 A or 7.5 A 3.0 V ≤ V_{PVIN_Bx} ≤ 4.5 V	–15%		10%
3.11	I_{LIM NEG}	Negative current limit (peak during each switching cycle)		1.5	2	2.6	A
3.15a	I_ADD	Phase adding level (multi-phase rails)	From 1-phase to 2-phase		2.0		A
3.15b			From 2-phase to 3-phase		3.6
3.15c			From 3-phase to 4-phase		5.5
3.16a	I_SHED	Phase shedding level (multi-phase rails)	From 2-phase to 1-phase		1.4		A
3.16b			From 3-phase to 2-phase		2.5
3.16c			From 4-phase to 3-phase		3.3
3.16d	I_{SHED_Hyst}	Phase shedding hysteresis (multi-phase rails)	Hysteresis from 2-phase to 1-phase		0.6		A
3.16e			Hysteresis from 3-phase to 2-phase		1.4
3.16f			Hysteresis from 4-phase to 3-phase		2.5
Electrical Characteristics - Current Consumption, On Resistance, and Output Pulldown Resistance
3.17	I_off	Shutdown current, BUCKx disabled			1		µA
3.18a	I_{Q_AUTO}	Auto mode quiescent current	I_{OUT_Bn} = 0 mA, not switching, first single phase or primary phase in multi-phase configuration, T_J = 25°C		90		µA
3.18b			I_{OUT_Bn} = 0 mA, not switching, additional single phase or primary phase in multi-phase configuration, T_J = 25°C		60
3.18c			I_{OUT_Bn} = 0 mA, not switching, secondary/ tertiary/quaternary phase in multi-phase configuration, T_J = 25°C		30
3.19	R_{DS(ON) HS FET}	On-resistance, high-side FET	I_{OUT_Bx} = 1 A		26	65	mΩ
3.20	R_{DS(ON) LS FET}	On-resistance, low-side FET	I_{OUT_Bx} = 1 A		16	35	mΩ
3.21	R_{DIS_Bx}	Output pulldown discharge resistance	Regulator disabled, per phase, BUCKx_PLDN = 1, between SW_Bx and PGND pins	50	100	150	Ω
3.21b	V_{TH_SC_RV_Bx}	Threshold voltage for Short Circuit and Residual Voltage Detection		140	150	160	mV
3.22	R_{SW_SC}	Resistance threshold for Short circuit detection at the SW pin		3	5	25	Ω
Electrical Characteristics - 4.4MHz Single-Phase and Multi-Phase Configuration
3.23	V_{PVIN_Bx}	Input voltage range		3.0	3.3	5.5	V
3.24	V_{VOUT_Bx}	Output voltage programmable range		0.3		1.9	V
3.25	C_{IN_Bx}	Input filtering capacitance(1)(2)		3	22		µF
3.26a	C_{OUT-Local(Buckx)}	Output capacitance, local⁽²⁾	Per phase	10	22		µF
3.27b	C_{OUT-TOTAL_Bx}	Output capacitance, total (local and POL)⁽²⁾	Per phase	50		250	µF
3.28a	L_Bx	Power inductor	Inductance	154	220	286	nH
3.28b	L_Bx	Power inductor	DCR		10		mΩ
3.29	I_{Q_PWM}	PWM mode Quiescent current	I_{OUT_Bx} = 0 mA		20		mA
3.160a	V_{OUT_DC_Bx}	DC output voltage accuracy, includes voltage reference, DC load and line regulations and temperature	V_{VOUT_Bx} < 1 V, PWM mode	–10		10	mV
3.160b			V_{VOUT_Bx} ≥ 1 V, PWM mode	–1%		1%
3.160c			V_{VOUT_Bx} < 1 V, PFM mode	–20		25	mV
3.160d			V_{VOUT_Bx} ≥ 1 V, PFM mode	-1% - 10 mV		1% + 15 mV
3.31a	T_{LDSR_MP}	Transient load step response⁽⁸⁾	0.3 V ≤ V_{VOUT_Bx}< 0.6 V, I_{OUT_Bx} = 1 mA to 400 mA / phase, t_r = t_f = 1 µs, PWM mode		15		mV
3.31b			0.6 V ≤ V_{VOUT_Bx} < 1.5 V, I_{OUT_Bx} = 1 mA to 2 A / phase, t_r = t_f = 1 µs, PWM mode		15		mV
3.31c			1.5 V ≤ V_{VOUT_Bx} ≤ 1.9 V, I_{OUT_Bx} = 1 mA to 2 A / phase, t_r = t_f = 1 µs, PWM mode		1.5%
3.32	T_LNSR	Transient line response	V_{PVIN_Bx} stepping from 3 V to 3.5 V, t_r = t_f = 10 µs, I_{OUT_Bx} = I_OUT(max)	-20	±5	20	mV
3.33a	V_{OUT_Ripple}	Ripple voltage⁽⁸⁾	PWM mode, 1-phase		3		mV_PP
3.33b	V_{OUT_Ripple}	Ripple voltage⁽⁸⁾	PFM mode		15	25	mV_PP
3.120	I_PFM-PWM	PFM to PWM switch current threshold⁽⁶⁾	Auto mode		600		mA
3.121	I_PWM-PFM	PWM to PFM switch current threshold⁽⁶⁾	Auto mode		300		mA
3.122	I_{PWM-PFM_HYST}	PWM to PFM switch current hysteresis	Auto mode		200		mA
Electrical Characteristics - 2.2MHz Single-Phase Configuration for DDR Termination
3.34	V_{PVIN_Bx}	Input voltage range		2.8	3.3	5.5	V
3.35	I_{OUT_Bx_SINK}	Current sink		1			A
3.36	V_{VOUT_Bx}	Output voltage programmable range		0.5		0.7	V
3.37	C_{IN_Bx}	Input filtering capacitance(1)(2)		3	22		µF
3.38a	C_{OUT-Local(Buckx)}	Output capacitance, local⁽²⁾		10	22		µF
3.38b	C_{OUT-TOTAL_Bx}	Output capacitance, total (local and POL)⁽²⁾		25		50	µF
3.39a	L_Bx	Power inductor	Inductance	329	470	611	nH
3.39b	L_Bx	Power inductor	DCR		10		mΩ
3.40	I_{Q_PWM}	PWM mode Quiescent current	I_{OUT_Bx} = 0 mA		13		mA
3.161a	V_{OUT_DC_Bx}	DC output voltage accuracy, includes voltage reference, DC load and line regulations and temperature	V_{VOUT_Bx} < 1 V, PWM mode	–10		10	mV
3.161b	V_{OUT_DC_Bx}		V_{VOUT_Bx} ≥ 1 V, PWM mode	–1%		1%
3.42	T_LDSR	Transient load step response⁽⁸⁾	0.5 V ≤ V_{VOUT_Bx}≤ 0.7 V, I_{OUT_Bx} = -1 mA to -1000 mA, t_r = t_f = 1 µs, PWM mode		15		mV
3.43	T_LNSR	Transient line response	V_{PVIN_Bx} stepping from 3 V to 3.5 V, t_r = t_f = 10 µs, I_{OUT_Bx} = I_{OUT_Bx(max)}	-20	±5	20	mV
3.44	V_{OUT_Ripple}	Ripple voltage⁽⁸⁾	PWM mode		3	6	mV_PP
Electrical Characteristics - 4.4MHz Single-Phase Configuration Low Output Voltage
3.45	V_{PVIN_Bx}	Input voltage range		3.0	3.3	5.5	V
3.46	V_{VOUT_Bx}	Output voltage programmable range		0.3		1.9	V
3.47	C_{IN_Bx}	Input filtering capacitance(1)(2)		3	22		µF
3.48a	C_{OUT-Local(Buckx)}	Output capacitance, local⁽²⁾		10	22		µF
3.48b	C_{OUT-TOTAL_Bx}	Output capacitance, total (local and POL)⁽²⁾		25		100	µF
3.49a	L_Bx	Power inductor	Inductance	154	220	286	nH
3.49b	L_Bx	Power inductor	DCR		10		mΩ
3.50	I_{Q_PWM}	PWM mode Quiescent current	I_{OUT_Bx}= 0 mA		19		mA
3.162a	V_{OUT_DC_Bx}	DC output voltage accuracy, includes voltage reference, DC load and line regulations and temperature	V_{VOUT_Bx} < 1 V, PWM mode	–10		10	mV
3.162b			V_{VOUT_Bx} ≥ 1 V, PWM mode	–1%		1%
3.162c			V_{VOUT_Bx} < 1 V, PFM mode	–20		35	mV
3.162d			V_{VOUT_Bx} ≥ 1 V, PFM mode	-1% - 10 mV		1% + 25 mV
3.52a	T_LDSR	Transient load step response⁽⁸⁾	0.3 V ≤ V_{VOUT_Bx}< 0.6 V, I_{OUT_Bx} = 1 mA to 200 mA, t_r = t_f = 1 µs, PWM mode		15		mV
3.52b			0.6 V ≤ V_{VOUT_Bx} < 1.5 V, I_{OUT_Bx} = 1 mA to 1 A, t_r = t_f = 1 µs, PWM mode		15		mV
3.52c			1.5 V ≤ V_{VOUT_Bx} ≤ 1.9 V, I_{OUT_Bx} = 1 mA to 1 A, t_r = t_f = 1 µs, PWM mode		1.5%
3.53	T_LNSR	Transient line response	V_{PVIN_Bxx} stepping from 3 V to 3.5 V, t_r = t_f = 10 µs, I_{OUT_Bx}= I_{OUT_Bx(max)}	-20	±5	20	mV
3.54a	V_{OUT_Ripple}	Ripple voltage⁽⁸⁾	PWM mode		5	8	mV_PP
3.54b	V_{OUT_Ripple}	Ripple voltage⁽⁸⁾	PFM mode		15	50	mV_PP
3.123	I_PFM-PWM	PFM to PWM switch current threshold⁽⁶⁾	Auto mode, V_{PVIN_Bx} = 3.3 V, V_{VOUT_Bx} = 1.0 V		600		mA
3.124	I_PWM-PFM	PWM to PFM switch current threshold⁽⁶⁾	Auto mode, V_{PVIN_Bx} = 3.3 V, V_{VOUT_Bx} = 1.0 V		300		mA
3.125	I_{PWM-PFM_HYST}	PWM to PFM switch current hysteresis	Auto mode, V_{PVIN_Bx} = 3.3 V, V_{VOUT_Bx} = 1.0 V		200		mA
Electrical Characteristics - 4.4MHz Single-Phase Configuration High Output Voltage
3.55	V_{PVIN_Bx}	Input voltage range		4.5	5	5.5	V
3.56	I_{OUT_Bx_4.4_HVOUT}	Output current				2.5	A
3.57	V_{VOUT_Bx}	Output voltage programmable range		1.7		3.34	V
3.58	C_{IN_Bx}	Input filtering capacitance(1)(2)		3	22		µF
3.59a	C_{OUT-Local_Bx}	Output capacitance, local⁽²⁾		10	22		µF
3.59b	C_{OUT-TOTAL_Bx}	Output capacitance, total (local and POL)⁽²⁾		50		150	µF
3.60a	L_Bx	Power inductor	Inductance	329	470	611	nH
3.60b	L_Bx	Power inductor	DCR		10		mΩ
3.61	I_{Q_PWM}	PWM mode Quiescent current	I_{OUT_Bx} = 0 mA		29		mA
3.163a	V_{OUT_DC_Bx}	DC output voltage accuracy, includes voltage reference, DC load and line regulations and temperature	V_{VOUT_Bx} < 1 V, PWM mode	–10		10	mV
3.163b			V_{VOUT_Bx} ≥ 1 V, PWM mode	–1%		1%
3.163c			V_{VOUT_Bx} < 1 V, PFM mode	–20		25	mV
3.163d			V_{VOUT_Bx} ≥ 1 V, PFM mode	-1% - 10 mV		1% + 15 mV
3.63	T_{LDSR_SP}	Transient load step response⁽⁸⁾	1.7 V ≤ V_{VOUT_Bx} ≤ 3.34 V, I_{OUT_Bx}= 1 mA to 1 A, t_r = t_f = 1 µs, PWM mode		1.5%
3.64	T_LNSR	Transient line response	V_{PVIN_Bxx} stepping from 4.7 V to 5.2 V, t_r = t_f = 10 µs, I_{OUT_Bx} = I_{OUT_Bx(max)}	-20	±5	20	mV
3.65a	V_{OUT_Ripple}	Ripple voltage⁽⁸⁾	PWM mode		3	7	mV_PP
3.65b	V_{OUT_Ripple}	Ripple voltage⁽⁸⁾	PFM mode		15	25	mV_PP
3.126	I_PFM-PWM	PFM to PWM switch current threshold⁽⁶⁾	Auto mode, V_{PVIN_Bx} = 5 V, V_{VOUT_Bx} = 1.8 V		400		mA
3.127	I_PWM-PFM	PWM to PFM switch current threshold⁽⁶⁾	Auto mode, V_{PVIN_Bx} = 5 V, V_{VOUT_Bx} = 1.8 V		260		mA
3.128	I_{PWM-PFM_HYST}	PWM to PFM switch current hysteresis	Auto mode, V_{PVIN_Bx} = 5 V, V_{VOUT_Bx} = 1.8 V		140		mA
Electrical Characteristics - 2.2MHz Single-Phase Configuration with 5.0V VIN
3.66	V_{PVIN_Bx}	Input voltage range		4.5	5	5.5	V
3.67	V_{VOUT_Bx}	Output voltage programmable range		0.3		3.34	V
3.68	C_{IN_Bx}	Input filtering capacitance(1)(2)		3	22		µF
3.69a	C_{OUT-Local_Bx}	Output capacitance, local⁽²⁾		10	22		µF
3.69b	C_{OUT-TOTAL_Bx}	Output capacitance, total (local and POL)⁽²⁾		100		1000	µF
3.70a	L_Bx	Power inductor	Inductance	700	1000	1300	nH
3.70b	L_Bx	Power inductor	DCR		10		mΩ
3.71	I_{Q_PWM}	PWM mode Quiescent current	I_{OUT_Bx} = 0 mA		14		mA
3.164a	V_{OUT_DC_Bx}	DC output voltage accuracy, includes voltage reference, DC load and line regulations and temperature	V_{VOUT_Bx} < 1 V, PWM mode	–10		10	mV
3.164b			V_{VOUT_Bx} ≥ 1 V, PWM mode	–1%		1%
3.164c			V_{VOUT_Bx} < 1 V, PFM mode	–20		25	mV
3.164d			V_{VOUT_Bx} ≥ 1 V, PFM mode	-1% - 10 mV		1% + 15 mV
3.73a	T_{LDSR_SP}	Transient load step response⁽⁸⁾	0.3 V ≤ V_{VOUT_Bx}< 0.6 V, I_{OUT_Bx} = 1 mA to 400 mA, t_r = t_f = 1 µs, PWM mode		15		mV
3.73b			0.6 V ≤ V_{VOUT_Bx} < 1.5 V, I_{OUT_Bx} = 1 mA to 2 A, t_r = t_f = 1 µs, PWM mode		15		mV
3.73c			1.5 V ≤ V_{VOUT_Bx} ≤ 3.34 V, I_{OUT_Bx} = 1 mA to 2 A, t_r = t_f = 1 µs, PWM mode		1.5%
3.74	T_LNSR	Transient line response	V_{PVIN_Bx} stepping from 4.7 V to 5.2 V, t_r = t_f = 10 µs, I_{OUT_Bx}= I_{OUT_Bx(max)}	-20	±5	20	mV
3.75a	V_{OUT_Ripple}	Ripple voltage⁽⁸⁾	PWM mode		3	7.5	mV_PP
3.75b	V_{OUT_Ripple}	Ripple voltage⁽⁸⁾	PFM mode		15	25	mV_PP
3.129	I_PFM-PWM	PFM to PWM switch current threshold⁽⁶⁾	Auto mode, V_{PVIN_Bx} = 5 V, V_{VOUT_Bx} = 1.0V		400		mA
3.130	I_PWM-PFM	PWM to PFM switch current threshold⁽⁶⁾	Auto mode, V_{PVIN_Bx} = 5 V, V_{VOUT_Bx} = 1.0V		200		mA
3.131	I_{PWM-PFM_HYST}	PWM to PFM switch current hysteresis	Auto mode, V_{PVIN_Bx} = 5 V, V_{VOUT_Bx} = 1.0V		200		mA
Electrical Characteristics - 2.2MHz Single-Phase and Multi-Phase Configuration
3.76	V_{PVIN_Bx}	Input voltage range		3.0	3.3	5.5	V
3.77	V_{VOUT_Bx}	Output voltage programmable range		0.3		1.9	V
3.78	C_{IN_Bx}	Input filtering capacitance(1)(2)		3	22		µF
3.79a	C_{OUT-Local_Bx}	Output capacitance, local⁽²⁾	Per phase	10	22		µF
3.79b	C_{OUT-TOTAL_Bx}	Output capacitance, total (local and POL)⁽²⁾	Per phase	100		1000	µF
3.80a	LBx	Power inductor	Inductance	329	470	611	nH
3.80b	LBx	Power inductor	DCR		10		mΩ
3.81	I_{Q_PWM}	PWM mode Quiescent current	I_{OUT_Bx} = 0 mA		13		mA
3.165a	V_{OUT_DC_Bx}	DC output voltage accuracy, includes voltage reference, DC load and line regulations and temperature	V_{VOUT_Bx} < 1 V, PWM mode	–10		10	mV
3.165b			V_{VOUT_Bx} ≥ 1 V, PWM mode	–1%		1%
3.165c			V_{VOUT_Bx} < 1 V, PFM mode	–20		25	mV
3.165d			V_{VOUT_Bx} ≥ 1 V, PFM mode	-1% - 10 mV		1% + 15 mV
3.83a	T_{LDSR_MP}	Transient load step response⁽⁸⁾	0.3 V ≤ V_{VOUT_Bx}< 0.6 V, I_{OUT_Bx} = 1 mA to 400 mA / phase, t_r = t_f = 1 µs, PWM mode		5		mV
3.83b			0.6 V ≤ V_{VOUT_Bx} < 1.5 V, I_{OUT_Bx} = 1 mA to 2 A / phase, t_r = t_f = 1 µs, PWM mode		15		mV
3.83c			1.5 V ≤ V_{VOUT_Bx} ≤ 1.9 V, I_{OUT_Bx} = 1 mA to 2 A / phase, t_r = t_f = 1 µs, PWM mode		1%
3.84	T_LNSR	Transient line response	V_{PVIN_Bx} stepping from 3 V to 3.5 V, t_r = t_f = 10 µs, I_{OUT_Bx} = I_{OUT_Bx(max)}	-20	±5	20	mV
3.85a	V_{OUT_Ripple}	Ripple voltage⁽⁸⁾	PWM mode, 1-phase		3	5	mV_PP
3.85b	V_{OUT_Ripple}	Ripple voltage⁽⁸⁾	PFM mode		15	25	mV_PP
3.132	I_PFM-PWM	PFM to PWM switch current threshold⁽⁶⁾	Auto mode, V_{PVIN_Bx} = 3.3 V, V_{VOUT_Bx} = 1.0V		500		mA
3.133	I_PWM-PFM	PWM to PFM switch current threshold⁽⁶⁾	Auto mode, V_{PVIN_Bx} = 3.3 V, V_{VOUT_Bx} = 1.0V		440		mA
3.134	I_{PWM-PFM_HYST}	PWM to PFM switch current hysteresis	Auto mode, V_{PVIN_Bx} = 3.3 V, V_{VOUT_Bx} = 1.0V		60		mA
Electrical Characteristics - 2.2MHz Single-Phase Generic Configuration
3.86	V_{PVIN_Bx}	Input voltage range		2.8	3.3	5.5	V
3.87	V_{VOUT_Bx}	Output voltage programmable range		0.3		3.34	V
3.88	C_{IN_Bx}	Input filtering capacitance(1)(2)		3	22		µF
3.89a	C_{OUT-Local_Bx}	Output capacitance, local⁽²⁾		10	22		µF
3.89b	C_{OUT-TOTAL_Bx}	Output capacitance, total (local and POL)⁽²⁾		100		500	µF
3.90a	L_Bx	Power inductor	Inductance	700	1000	1300	nH
3.90b	L_Bx	Power inductor	DCR		10		mΩ
3.91	I_{Q_PWM}	PWM mode Quiescent current	I_{OUT_Bx} = 0 mA		13		mA
3.166a	V_{OUT_DC_Bx}	DC output voltage accuracy, includes voltage reference, DC load and line regulations and temperature	V_{VOUT_Bx} < 1 V, PWM mode	–10		10	mV
3.166b			V_{VOUT_Bx} ≥ 1 V, PWM mode	–1%		1%
3.166c			V_{VOUT_Bx} < 1 V, PFM mode	–20		25	mV
3.166d			V_{VOUT_Bx} ≥ 1 V, PFM mode	-1% - 10 mV		1% + 15 mV
3.93a	T_{LDSR_SP}	Transient load step response⁽⁸⁾	0.3 V ≤ V_{VOUT_Bx}< 0.6 V, I_{OUT_Bx} = 1 mA to 400 mA, t_r = t_f = 1 µs, PWM mode		35		mV
3.93b			0.6 V ≤ V_{VOUT_Bx} < 1.0 V, I_{OUT_Bx} = 1 mA to 2 A, t_r = t_f = 1 µs, PWM mode		17		mV
3.93c			1.0 V ≤ V_{VOUT_Bx} ≤ 3.34 V, I_{OUT_Bx} = 1 mA to 2 A, t_r = t_f = 1 µs, PWM mode		3.5%
3.94	T_LNSR	Transient line response	V_{PVIN_Bx} stepping from 3 V to 3.5 V, t_r = t_f = 10 µs, I_{OUT_Bx} = I_{OUT_Bx(max)}	-20	±5	20	mV
3.95a	V_{OUT_Ripple}	Ripple voltage⁽⁸⁾	PWM mode		3	7.5	mV_PP
3.95b	V_{OUT_Ripple}	Ripple voltage⁽⁸⁾	PFM mode		15	25	mV_PP
3.135	I_PFM-PWM	PFM to PWM switch current threshold⁽⁶⁾	Auto mode, V_{PVIN_Bx} = 3.3 V, V_{VOUT_Bx} = 1.0V		300		mA
3.136	I_PWM-PFM	PWM to PFM switch current threshold⁽⁶⁾	Auto mode, V_{PVIN_Bx} = 3.3 V, V_{VOUT_Bx} = 1.0V		150		mA
3.137	I_{PWM-PFM_HYST}	PWM to PFM switch current hysteresis	Auto mode, V_{PVIN_Bx} = 3.3 V, V_{VOUT_Bx} = 1.0V		150		mA
Timing Requirements
3.108		Settling time after voltage scaling	From end of voltage ramp to V_OUT within 15 mV from V_{OUT_DC_Bx}⁽¹⁰⁾			105	µs
3.109		Start-up delay	From enable to start of output voltage rise	100	150	200	µs
3.110	t_{delay_OC}	Over-current detection delay	Peak current limit triggering during every switching cycle			7	µs
3.111	t_{deglitch_OC}	Over-current detection signal deglitch time	Digital deglitch time for detected signal. Time duration to filter out short positive and negative pulses	19		23	µs
3.112	t_{latency_OC}	Over-current signal latency time from detection	Total delay from over-current detection to interrupt or PFSM trigger			30	µs
Switching Characteristics
3.106a	f_SW	Switching frequency, PWM mode NVM programmable	2.2 MHz setting, internal clock	2	2.2	2.4	MHz
3.106b			4.4 MHz setting, internal clock	4	4.4	4.8
3.106d			2.2 MHz setting, internal clock, spread spectrum enabled	1.8	2.2	2.6
3.106e			4.4 MHz setting, internal clock, spread spectrum enabled	3.5	4.4	5.3
3.106g			2.2 MHz setting, synchronized to external clock	1.8	2.2	2.6
3.106h			4.4 MHz setting, synchronized to external clock	3.5	4.4	5.3
3.107b	f_{SW_max}	Automatic maximum switching frequency scaling in PWM mode	0.3 V ≤ V_{VOUT_Bx} < 0.6 V		2.2		MHz

(1) Input capacitors must be placed as close as possible to the device pins.

(2) When DC voltage is applied to a ceramic capacitor, the effective capacitance is reduced due to DC bias effect. The table above therefore lists the minimum value as CAPACITANCE. In order to meet the minimum capacitance requirement, the nominal value of the capacitor may have to be scaled accordingly to take the drop of capacitance into account for a given dc voltage at the outputs of regulators.

(3) The maximum output current can be limited by the forward current limit I_{LIM FWD}. The maximum output current is also limited by the junction temperature and maximum average current over lifetime. The power dissipation inside the die increases the junction temperature and limits the maximum current depending of the length of the current pulse, efficiency, board and ambient temperature.

(4) Advance thermal design is required to avoid thermal shutdown.

(5) SLEW_RATEx[2:0] register default comes from NVM memory, and can be re-programed by software. Output capacitance, forward and negative current limits and load current may limit the maximum and minimum slew rates.

(6) The PFM-to-PWM and PWM-to-PFM switchover current can be affected by the input and the output voltage, temperature, the inductor and the capacitor values.

(7) A high slew-rate setting can generate over and undershoot during voltage change. See Application Section for more information.

(8) Please refer to the applications section of the datasheet regarding the power delivery network (PDN) used for the transient load step and output ripple test conditions. All ripple specs are defined across POL capacitor in the described PDN.

(9) Slew-rate is measured from 10% to 90% of the voltage ramp with voltage step ≥ 500 mV.

(10) Voltage ramp is calculated using slew-rate from minimum column.