SLUS270G Data sheet | 德州仪器 TI.com.cn

SLUS270G March 1999 – May 2020 UCC2800 , UCC2801 , UCC2802 , UCC2803 , UCC2804 , UCC2805

PRODUCTION DATA

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机械数据 (封装 | 引脚)

D|8
- MSOI002K
PW|8
- MPDS568

散热焊盘机械数据 (封装 | 引脚)

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8.5 Electrical Characteristics

–40°C ≤ T_A ≤ 125°C for UCC280x. V_CC = 10 V⁽¹⁾, RT = 100 k from REF to RC, CT = 330 pF from RC to GND, 0.1-uF capacitor from V_CC to GND, 0.1-uF capacitor from V_REF to GND, and T_A= T_J (unless otherwise noted).

PARAMETER	TEST CONDITIONS		MIN	TYP	MAX	UNIT
REFERENCE
Output voltage	T_J= 25°C, I = 0.2 mA, UCC2800, UCC2801, UCC2802, and UCC2804		4.925	5	5.075	V
Output voltage	T_J= 25°C, I = 0.2 mA, UCC2803 and UCC2805		3.94	4	4.06	V
Load regulation	0.2 mA < I < 5 mA	UCC280x		10	30	mV
Line regulation	T_J = 25°C, V_CC = 10 V to clamp (I_VCC = 25 mA)				1.9	mV/V
Line regulation	T_J = –40°C to 125°C, V_CC = 10 V to clamp (I_VCC = 25 mA)	UCC280x			2.5	mV/V
Total variation	UCC2800, UCC2801, UCC2802, and UCC2804⁽⁵⁾		4.88	5	5.1	V
Total variation	UCC2803 and UCC2805⁽⁵⁾		3.9	4	4.08	V
Output noise voltage	10 Hz ≤ f ≤ 10 kHz, T_J= 25°C⁽⁷⁾			130		µV
Long term stability	T_A = 125°C, 1000 hours⁽⁷⁾			5		mV
Output short circuit			–5		–35	mA
OSCILLATOR
Oscillator frequency	UCC2800, UCC2801, UCC2802, UCC2804⁽²⁾		40	46	52	kHz
Oscillator frequency	UCC2803 and UCC2805⁽²⁾		26	31	36	kHz
Temperature stability⁽⁷⁾				2.5		%
Amplitude peak-to-peak			2.25	2.4	2.55	V
Oscillator peak voltage				2.45		V
ERROR AMPLIFIER
Input voltage	COMP = 2.5 V, UCC2800, UCC2801, UCC2802, and UCC2804		2.44	2.5	2.56	V
Input voltage	COMP = 2 V, UCC2803 and UCC2805		1.95	2	2.05	V
Input bias current			–1		1	µA
Open loop voltage gain			60	80		dB
COMP sink current	FB = 2.7 V, COMP = 1.1 V	UCC280x	0.3		3.5	mA
COMP source current	FB = 1.8 V, COMP = REF – 1.2 V		–0.2	–0.5	–0.8	mA
Gain bandwidth product⁽⁷⁾				2		MHz
PWM
Maximum duty cycle	UCC2800, UCC2802, and UCC2803		97	99	100	%
Maximum duty cycle	UCC2801, UCC2804, and UCC2805		48	49	50	%
CURRENT SENSE
Gain⁽³⁾			1.1	1.65	1.8	V/V
Maximum input signal	COMP = 5 V⁽⁴⁾		0.9	1	1.1	V
Input bias current			–200		200	nA
CS blank time			50	100	150	ns
Overcurrent threshold			1.42	1.55	1.68	V
COMP to CS offset	CS = 0 V		0.45	0.9	1.35	V
OUTPUT
OUT low level	I = 20 mA, all parts			0.1	0.4	V
	I = 200 mA, all parts			0.35	0.9
	I = 50 mA, VCC = 5 V, UCC2803 and UCC2805			0.15	0.4
	I = 20 mA, VCC = 0 V, all parts			0.7	1.2
OUT high V_SAT (V_CC-OUT)	I = 20 mA, all parts			0.15	0.4	V
	I = 200 mA, all parts			1	1.9
	I = 50 mA, VCC = 5 V, UCC2803 and UCC2805			0.4	0.9
Rise time	C_L = 1 nF			41	70	ns
Fall time	C_L = 1 nF			44	75	ns
UNDERVOLTAGE LOCKOUT
Start threshold⁽⁶⁾	UCC2800		6.6	7.2	7.8	V
	UCC2801		8.6	9.4	10.2
	UCC2802 and UCC2804		11.5	12.5	13.5
	UCC2803 and UCC2805		3.7	4.1	4.5
Stop threshold⁽⁶⁾	UCC2800		6.3	6.9	7.5	V
	UCC2801		6.8	7.4	8
	UCC2802 and UCC2804		7.6	8.3	9
	UCC2803 and UCC2805		3.2	3.6	4
Start to stop hysteresis	UCC2800		0.12	0.3	0.48	V
	UCC2801		1.6	2	2.4
	UCC2802 and UCC2804		3.5	4.2	5.1
	UCC2803 and UCC2805		0.2	0.5	0.8
SOFT START
COMP rise time	FB = 1.8 V, rise from 0.5 V to REF – 1 V			4	10	ms
OVERALL
Start-up current	V_CC < start threshold			0.1	0.2	mA
Operating supply current	FB = 0 V, CS = 0 V			0.5	1	mA
VCC internal Zener voltage	I_CC = 10 mA⁽⁶⁾⁽⁸⁾		12	13.5	15	V
VCC internal Zener voltage minus start threshold voltage	UCC2802 and UCC2804⁽⁶⁾		0.5	1		V

(1) Adjust VCC above the start threshold before setting at 10 V.

(2) Oscillator frequency for the UCCx800, UCC2802, and UCC2803 is the output frequency. Oscillator frequency for the UCC2801, UCC2804, and UCC2805 is twice the output frequency.

(3) Gain is defined by: A = ΔV_COMP / Δ V_CS. 0 ≤ V_CS ≤ 0.8 V

(4) Parameter measured at trip point of latch with Pin 2 at 0 V.

(5) Total variation includes temperature stability and load regulation.

(6) Start threshold, stop threshold, and Zener shunt thresholds track one another.

(7) Ensured by design. Not 100% tested in production.

(8) The device is fully operating in clamp mode, as the forcing current is higher than the normal operating supply current.