ZHCSP94A 数据表 | 德州仪器 TI.com.cn

ZHCSP94A November 2021 – February 2022 BQ27Z746

PRODUCTION DATA

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机械数据 (封装 | 引脚)

YAH|15
- MXBG425

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6.5.4 Cell Sensing Output (BAT_SP, BAT_SN)

Unless otherwise noted, characteristics noted under conditions of T_A = –40 to 85℃

PARAMETER		TEST CONDITIONS	MIN	TYP	MAX	UNIT
Static Response
V_BUFACC	Buffer accuracy (BAT_SP – BAT_SN)	V_BAT @ 1500 mV and 2400 mV DC, PACK-BAT_SP ≥ 200 mV, BAT_SP load: Hi-Z to 1 kΩ, BAT_SN load: 1 kΩ to 10 kΩ	1450	1500	1550	mV
V_BUFACC	Buffer accuracy (BAT_SP – BAT_SN)		2350	2400	2450	mV
V_BUFOFFS	BAT_SN common mode shift (BAT_SN – VSS)	400-mV option, V_BAT = 1.5 V to 2.5 V	370	400	430	mV
		200-mV option, V_BAT = 2.0 V to 2.5 V	170	200	230
		0-mV option, V_BAT = 2.0 V to 2.5 V	–30	0	30
		600-mV option, V_BAT = 2.0 to 2.5 V	550	600	650
ΔV_{BUF_LINE}	Buffer line regulation	V_BAT = 1.5 to 2.5 V, no load, BAT_SP – BAT_SN, V_PACK – V_BAT = 1.0 V		10		mV
ΔV_{BUF_LOAD}	Buffer load regulation	V_BAT = 2.4 V, load = 1 mA, BAT_SP – BAT_SN, V_PACK - V_BAT = 1.0 V		1.2		mV
V_RLOACC	RLO mode accuracy (BAT_SP – BAT_SN)	V_BAT = 3000-mV to 5000-mV DC, For stability, 0-mV buffer option enabled BAT_SP load: Hi-Z to 1 kΩ BAT_SN load: 1 kΩ to 10 kΩ	–7		+7	mV
V_RLOACCP	RLO mode accuracy (BAT_SP – VSS)		–5		+5
V_RLOACCN	RLO mode accuracy (BAT_SN – VSS)		–5		+5
R_{LO_SP}	BAT_SP low resistance mode	200-Ω option, DSG FET = ON	160	200	260	Ω
R_{LO_SP}	BAT_SP low resistance mode	510-Ω option, DSG FET = ON	459	510	561	Ω
R_{LO_SN}	BAT_SN low resistance mode	200-Ω option, DSG FET = ON	160	200	260	Ω
R_{LO_SN}	BAT_SN low resistance mode	510-Ω option, DSG FET = ON	459	510	561	Ω
R_{HIZ_SP}	BAT_SP high impedance mode	CHG FET = OFF	0.6	1.0	1.3	MΩ
R_{HIZ_SN}	BAT_SN high impedance mode	CHG FET = OFF	0.6	1.0	1.3	MΩ
t_{BUF_OFF}	Buffer turn-off timing ⁽¹⁾	Buffer disable timing respect to DSG FET turn-on		500		us
C_{BUF_SP}	Max external capacitance for stable operation ⁽¹⁾	BAT_SP to SRN (PACK–)			150	pF
C_{BUF_SN}	Max external capacitance for stable operation ⁽¹⁾	BAT_SN to SRN (PACK–)			150	pF
B_{BUF_BW}	Buffer unity gain bandwidth ⁽¹⁾	Buffer enabled		30		kHz
V_BCP	BAT_SP – BAT +Fault (BCP) Threshold Range⁽¹⁾	Recommended threshold range. Factory trimmed in ≈2-mV steps	+100		+250	mV
V_BCP	Factory default trimmed threshold⁽³⁾	Recommended threshold range. Factory trimmed in ≈2-mV steps		+200
V_{BCP_ACC}	BAT_SP – BAT +Fault Accuracy ⁽³⁾	RLO mode enabled, Step size 10 mV	–10		+10
V_BDP	BAT_SP – BAT –Fault (BDP) Threshold Range⁽¹⁾	Recommended threshold range. Factory trimmed in ≈2-mV steps	–250		–100	mV
V_BDP	Factory default trimmed threshold⁽³⁾	Recommended threshold range. Factory trimmed in ≈2-mV steps		–200
V_{BDP_ACC}	BAT_SP – BAT –Fault Accuracy ⁽³⁾	RLO mode enabled, Step size 10 mV	–10		+10
V_BCN	BAT_SN – VSS +Fault (BCN) Threshold Range⁽¹⁾	Recommended threshold range. Factory trimmed in ≈2-mV steps	+100		+250	mV
V_BCN	Factory default trimmed threshold⁽³⁾	Recommended threshold range. Factory trimmed in ≈2-mV steps		+200
V_{BCN_ACC}	BAT_SN – VSS +Fault Accuracy ⁽³⁾	RLO mode enabled, Step size 10 mV	–10		+10
V_BDN	BAT_SN – VSS –Fault (BDN) Threshold Range⁽¹⁾	Recommended threshold range. Factory trimmed in ≈2-mV steps	–250		–100	mV
V_BDN	Factory default trimmed threshold⁽³⁾	Recommended threshold range. Factory trimmed in ≈2-mV steps		–200
V_{BDN_ACC}	BAT_SN – VSS –Fault Accuracy ⁽³⁾	RLO mode enabled, Step size 10 mV	–10		+10
t_{LO_FAULT_DLY}	BAT_SP / BAT_SN fault comparator delay⁽¹⁾	8-ms delay		8		ms
t_{LO_FAULT_DLY}	BAT_SP / BAT_SN fault comparator delay⁽¹⁾	100-ms delay		100		ms
t_{LO_FAULT_STRT}	BAT_SP / BAT_SN fault restart time ⁽¹⁾⁽²⁾			1000		ms
Transient Response
V_{LOAD_SP}	BAT_SP load transient ⁽¹⁾	No load ≥ 1 KΩ ≥ No load, Transition time 1 μs	–300		300	mV
V_{LOAD_SN}	BAT_SN load transient ⁽¹⁾	No load ≥ 1 KΩ ≥ No load, Transition time 1 μs	–200		200	mV
V_{LINE_SN}	BAT_SN line transient ⁽¹⁾	VBAT = 1.5 V ≥ 2.4 V ≥ 1.5 V, Transition slope 500 mV / 10 us	–30		30	mV
V_TRANS	(BAT_SP – BAT_SN) transition transient ⁽¹⁾	Firmware commanded transition from BUF mode to RLO mode	–700		50	mV

(1) Specified by Design. Not production tested.

(2) Firmware-based parameter. Not production tested.

(3) Accuracy assured by factory trim at specified default threshold. A change from the default threshold requires device calibration in the field. Refer to the BQ27Z746 Technical Reference Manual.