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TPS65721 Datasheet(PDF) 5 Page - Texas Instruments

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No. de pieza TPS65721
Descripción Electrónicos  PMU for Bluetooth Headsets
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI - Texas Instruments

TPS65721 Datasheet(HTML) 5 Page - Texas Instruments

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TPS65720
TPS65721
www.ti.com
SLVS979 – OCTOBER 2009
ELECTRICAL CHARACTERISTICS (continued)
VSYS = 3.6V, VDCDC1 = 2.05V, PFM mode, L = 3.3μH, COUTDCDC1 = 4.7μF, VINLDO1=2.05V, VLDO1=1.85V, TA = –40°C to 85°C
typical values apply in a temperature range of 10°C to 35°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
DCDC1 disabled; the discharge function can be disabled as an
RDIS
Internal discharge resistor at L
300
400
EEPROM option
THERMAL PROTECTION FOR DCDC1 AND LDO1
TSD
Thermal shutdown
Increasing junction temperature
150
°C
Thermal shutdown hysteresis
Decreasing junction temperature
30
°C
VLDO1 LOW DROPOUT REGULATOR
VINLDO
Input voltage range for LDO1
1.8
5.6
V
VLDO1
LDO1 output voltage range
0.8
3.3
V
VLDO1
LDO1 output voltage
Default output voltage for TPS65720 only
1.85
V
VFB_LDO1
Feedback voltage
Externally adjustable version only: TPS65721
0.8
V
IFB_LDO1
FB pin input current
0.1
μA
IO
Output current for LDO1
200
mA
ISC
LDO1 short circuit current limit
VLDO1 = GND; VinLDO1=2.05V
350
500
mA
Dropout voltage at LDO1, YFF package
IO = 200 mA, VINLDO = 2.05 V
180
mV
Dropout voltage at LDO1, RSN package
IO = 200 mA, VINLDO = 2.05 V
120
mV
Output voltage accuracy for LDO1
IO = 200 mA
–1.5%
2.5%
Line regulation for LDO1
VINLDO1 = VLDO1 + 0.5V (min. 1.8V) to 5.6 V (VSYS), IO = 50 mA
–1%
1%
Load regulation for LDO1
IO = 0 mA to 200 mA for LDO1
–1%
2%
PGOOD debounce time
Internal PGOOD comparator at VOUTLDO1 is debounced by
80
μs
Internal soft-start when LDO is enabled;
tRamp
VOUT Ramp time
250
μs
Time to ramp from 5% to 95% of VOUT
LDO disabled, discharge function per default disabled in
RDIS
Internal discharge resistor at VLDO1
250
400
register
BATTERY VOLTAGE COMPARATOR
Battery voltage comparator threshold voltage
Depending on Bits <VBAT0>, <VBAT1>; falling voltage
–3%
3%
V
Battery voltage comparator threshold voltage
Rising voltage
200
mV
hysteresis
POWER PATH
VUVLO
Undervoltage lockout
VAC: 0V → 4V
3.2
3.3
3.45
V
VHYS-UVLO
Hysteresis on UVLO
VAC: 4V → 0V
200
300
mV
(Input power detected if VIN > VBAT + VIN-DT) VBAT = 3.6V,
VIN-DT
Input power detection threshold
40
80
140
mV
VIN: 3.5V → 4V
VHYS-INDT
Hysteresis on VIN-DT
VBAT = 3.6 V, VIN: 4V → 3.5V
20
mV
Time measured from VIN: 0V → 5V 1μs
tDGL(PGOOD)
Deglitch time, input power detected status
2
ms
rise-time to PGOOD = LO
VOVP
Input over-voltage protection threshold
VAC: 5 V → 7 V
6.4
6.6
6.8
V
VHYS-OVP
Hysteresis on OVP
VAC: 11V → 5V
105
mV
tBLK(OVP)
Input over-voltage blanking time
50
μs
Time measured from VAC: 11V → 5V 1μs
tREC(OVP)
Input over-voltage recovery time
2
ms
fall-time to <CH_PGOOD>=0
ISYS = 0.3A, VAC = 4.35V, VBAT =4.2V; YFF package
170
285
mV
AC pin to SYS pin dropout voltage
VDO(AC-SYS)
VAC – VSYS
ISYS = 0.3A, VAC = 4.35V, VBAT =4.2V; RSN package
210
325
mV
ISYS = 0.2A, VAC = 0V, VBAT > 3V; YFF package
80
mV
Battery to SYS pin dropout voltage
VDO(BAT-SYS)
VBAT – VSYS
ISYS = 0.2A, VAC = 0V, VBAT > 3V; RSN package
120
mV
00: VAC > VSYS + VDO(AC-SYS), VBAT < 3.3V
–5%
3.4
5%
VBAT +
00: VAC > VSYS + VDO(AC-SYS), VBAT >/= 3.3V
–5%
5%
200mV
SYS pin voltage regulation selectable register
VSYS(REG)
V
<CHGCONFIG0> Bits <VSYS1>; <VSYS0>
01: VAC > VSYS + VDO(AC-SYS)
–5%
4.4
5%
10: VAC > VSYS + VDO(AC-SYS)
–5%
5.0
5%
11: VAC > VSYS + VDO(AC-SYS)
–5%
5.5
5%
Bit <AC input current1, AC input current0> = 00
90
95
100
mA
IAC-MAX
Maximum Input Current Register <CHCONFIG0>
Bit < AC input current1, AC input current0> = 01 or 10
450
475
500
mA
Input voltage threshold when input current is
Input current is reduced if voltage at AC falls below VAC-LOW
VAC-LOW
4.35
4.5
4.65
V
reduced
to keep the AC voltage above 4.5V
Output voltage threshold when charging current is
VO(REG)
Bit <V_DPPM> = 1
V
reduced
–100mV
VDPM
Register <CHCONFIG2>
Bit <V_DPPM> = 0
4.3
V
Copyright © 2009, Texas Instruments Incorporated
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