BQ24040_16 Datasheet, PDF (6/38 Pages) Texas Instruments – Single Cell Li-Ion and Li-Pol Battery Charger With Auto Start

bq24040, bq24041, bq24045
SLUS941F – SEPTEMBER 2009 – REVISED MARCH 2015
www.ti.com
7.4 Thermal Information
THERMAL METRIC⁽¹⁾
DSQ (WSON)
10 PINS
UNIT
θ_JA
θ_JCtop
θ_JB
ψ_JT
ψ_JB
θ_JCbot
Junction-to-ambient thermal resistance
Junction-to-case (top) thermal resistance
Junction-to-board thermal resistance
Junction-to-top characterization parameter
Junction-to-board characterization parameter
Junction-to-case (bottom) thermal resistance
63.5
79.5
33.9
°C/W
7.8
34.3
7.5
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
7.5 Electrical Characteristics
Over junction temperature range 0°C ≤ T_J ≤ 125°C and recommended supply voltage (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
INPUT
UVLO
V_{HYS_UVLO}
V_IN-DT
V_HYS-INDT
V_OVP
V_HYS-OVP
Undervoltage lock-out Exit
Hysteresis on V_{UVLO_RISE} falling
Input power good detection threshold is V_OUT
+ V_IN-DT
Hysteresis on V_IN-DT falling
Input over-voltage protection threshold
Hysteresis on OVP
V_IN-DPM
USB/Adaptor low input voltage protection.
Restricts lout at V_IN-DPM
USB input I-Limit 100mA
I_IN-USB-CL
USB input I-Limit 500mA, bq24040, bq24045
USB input I-Limit 380mA, bq24041
ISET SHORT CIRCUIT TEST
V_IN: 0V → 4V Update based on sim/char
V_IN: 4V→0V,
V_{UVLO_FALL} = V_{UVLO_RISE} –V_HYS-UVLO
(Input power good if V_IN > V_OUT + V_IN-DT); V_OUT = 3.6V, V_IN:
3.5V → 4V
V_OUT = 3.6V, V_IN: 4V → 3.5V
V_IN: 5V → 12V (bq24040, bq24045)
V_IN: 5V → 12V (bq24041)
V_IN: 11V → 5V
Feature active in USB mode; Limit Input Source Current to
50mA; V_OUT= 3.5V; R_ISET = 825Ω
Feature active in Adaptor mode; Limit Input Source
Current to 50mA; V_OUT = 3.5V; R_ISET = 825
ISET2 = Float; R_ISET = 825Ω
ISET2 = High; R_ISET = 825Ω
ISET2 = High; R_ISET = 825Ω
3.15
175
30
6.5
6.9
4.34
4.24
85
430
350
3.3
227
80
31
6.65
7.1
95
4.4
4.3
92
462
386
R_{ISET_SHORT}
Highest Resistor value considered a fault
(short). Monitored for Iout>90mA
R_ISET: 540Ω → 250Ω, Iout latches off. Cycle power to
Reset.
280
I_{OUT_CL}
Maximum OUT current limit Regulation
(Clamp)
BATTERY SHORT PROTECTION
V_IN = 5V, V_OUT = 3.6V, V_ISET2 = Low, R_ISET: 540Ω → 250Ω,
I_OUT latches off after t_DGL-SHORT
1.05
V_OUT(SC)
OUT terminal short-circuit detection
threshold/ precharge threshold
Vout:3V → 0.5V, no deglitch
0.75
0.8
V_OUT(SC-HYS)
OUT terminal Short hysteresis
Recovery ≥ V_OUT(SC) + V_OUT(SC-HYS);
Rising, no Deglitch
77
I_OUT(SC)
Source current to OUT terminal during short-
circuit detection
10
15
QUIESCENT CURRENT
I_OUT(PDWN)
Battery current into OUT terminal
V_IN = 0V
I_OUT(DONE)
OUT terminal current, charging terminated
V_IN = 6V, V_OUT > V_OUT(REG)
I_IN(STDBY)
Standby current into IN terminal
TS = LO, V_IN ≤ 6V
I_CC
Active supply current, IN terminal
TS = open, V_IN = 6V, TTDM – no load on OUT terminal,
V_OUT > V_OUT(REG), IC enabled
0.8
MAX UNIT
3.45
V
280 mV
145 mV
mV
6.8
V
7.3
mV
4.46
V
4.46
100
500 mA
420
500
Ω
1.4
A
0.85
V
mV
20 mA
1
μA
6
125 μA
1 mA
6
Submit Documentation Feedback
Copyright © 2009–2015, Texas Instruments Incorporated
Product Folder Links: bq24040 bq24041 bq24045