BQ27441-G1 Datasheet, PDF (6/22 Pages) Texas Instruments – System-Side Impedance Track Fuel Gauge

bq27441-G1
SLUSBH1A – NOVEMBER 2013 – REVISED JANUARY 2014
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LDO REGULATOR, WAKE-UP AND AUTO-SHUTDOWN AC CHARACTERISTICS
T_A = –40°C to 85°C, typical values at T_A = 30°C and V_REGIN = 3.6 V (unless otherwise noted)(Force Note1)⁽¹⁾
PARAMETER
TEST CONDITIONS
MIN
TYP
t_SHDN ⁽¹⁾
SHUTDOWN Entry Time
Time delay from SHUTDOWN
command to LDO output disable.
t_SHUP ⁽¹⁾
t_VDD ⁽¹⁾
t_WUVDD ⁽¹⁾
SHUTDOWN GPOUT Low time
Minimum low time of GPOUT (input)
in SHUTDOWN before WAKEUP
Initial V_DD Output delay
Wake-up V_DD Output delay
Time delay from rising edge of
GPOUT (input) to nominal VDD
output.
10
13
8
Time delay from rising edge of
t_PUCD
Power-up communication delay REGIN to the Active state. Includes
250
firmware initialization time.
MAX
250
(1) Specified by design. Not production tested.
UNIT
ms
μs
ms
ms
ms
SHUTDOWN and WAKE-UP Timing
t_VDD
REGIN
VDD
I2C Bus
GPOUT ^*
State Off
t_PUCD
WAKE-UP
t_SHDN
t_SHUP
t_WUVDD
t_PUCD
SHUTDOWN_
ENABLE
SHUTDOWN
Active
SHUTDOWN
WAKE-UP
Active
* GPOUT is configured as an input for wake-up signaling.
Figure 1. SHUTDOWN and WAKE-UP Timing Diagram
6
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