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TPS65921 Datasheet(PDF) 16 Page - Texas Instruments

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Part # TPS65921
Description  Power Management and USB Single Chip
PDF  58 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS65921 Datasheet(HTML) 16 Page - Texas Instruments

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TPS65921
SWCS048F – MARCH 2010 – REVISED MARCH 2012
www.ti.com
POWER CONSUMPTION
The typical power consumption is obtained in the nominal operating conditions and with the TPS65921
standalone.
TYPICAL
MODE
DESCRIPTION
CONSUMPTION
The phone is apparently off for the user, a
main battery is present and well-charged.
The RTC registers, registers in backup
VBAT = 3.8 V and
64 µA × 3.8 V =
C021 boot mode
WAIT-ON
domain are maintained. The wak-eup
Quartz present
243.2
μW
capabilities (like the PWRON button) are
available.
ACTIVE No Load
Subsystem is powered by the main battery.
(2995 + 433) µA ×
HFCLK = 26 MHz
All supplies are enabled with no external
3.8 V = 13026 µW
load, internal reset is released, and the
VBAT = 3.8 V
ACTIVE No Load
(3879 + 433) µA ×
associated processor is running. USB
HFCLK = 38.4 MHz
3.8 V = 16386 µW
intertupt handler consumes 433 µA (typ).
The main battery powers subsystem.
Selected supplies are enabled but in low-
492 µA × 3.8 V =
SLEEP No Load
VBAT = 3.8 V
consumption mode and associated
1870 µW
processor is in low-power mode.
USB CHARGE PUMP
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIN
Input voltage
On mode: VIN = VBAT
2.7
3.6
4.5
V
VO
Output voltage
4.625
5.0
5.25
V
VBAT > 3 V at VBUS
0
100
Iload
Rated output current
mA
2.7 V < VBAT < 3 V, at VBUS
0
50
Efficiency
ILOAD = 100 mA, VBAT = 3.6 V
55%
Setting time
ILOADmax/2 to ILOADmax in 5 μs
100
400
µs
Start-up time
3
ms
Short-circuit limitation current
250
350
450
mA
DC load regulation
ILOADmin to ILOADmax
250
500
mV
3.0 V to VBATmax
DC line regulation
250
350
mV
ILOAD = 100 mA
IVBUS_5Vmax/2 – IVBUS_5Vmax
300
350
50
μs, C = 2 × 4.7 μF
Transient load regulation
mV
0 – IVBUS_5Vmax/2, 50 μs, C = 2
350
× 4.7
μF
VBATmin to VBATmax in 50 μs,
Transient line regulation
300
350
mV
C = 2 × 4.7
μF
16
Submit Documentation Feedback
Copyright © 2010–2012, Texas Instruments Incorporated
Product Folder Link(s): TPS65921



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