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| 型號： | TPS65820RSHTG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 8-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC56 |
| 封裝： | 7 X 7 MM, GREEN, PLASTIC, QFN-56 |
| 文件頁數： | 78/98頁 |
| 文件大小： | 2290K |
| 代理商： | TPS65820RSHTG4 |
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ELECTRICAL CHARACTERISTICS – POWER PATH AND CHARGE MANAGEMENT
SLVS663B – MAY 2006 – REVISED APRIL 2008 .............................................................................................................................................................. www.ti.com
Over recommended operating conditions (typical values at TJ = 25°C), application circuit as in Figure 3 (unless otherwise
noted).
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VOLTAGE DETECTION THRESHOLDS
Input voltage detection
AC detected at V(AC) – V(BAT) > VIN(DT) ;
VIN(DT)
190
mV
threshold
USB detected at V(USB) – V(BAT) > VIN(DT)
Input Voltage removal
AC not detected at V(AC) – V(BAT) < VIN(NDT) ;
VIN(NDT)
125
mV
threshold
USB not detected at V(USB) – V(BAT) < VIN(NDT)
tDGL(NDT)
Power not detected deglitch
22.5
ms
Supplement detection
VSUP(DT)
Battery switch ON at V(BAT) – V(OUT) > VSUP(DT)
60
mV
threshold
Supplement not detected
VSUP(NDT)
Battery switch OFF at V(BAT) – V(OUT) < VSUP(NDT)
20
mV
threshold
POWER PATH INTEGRATED MOSFETs CHARACTERISTICS
AC switch dropout voltage
VACDO = V(AC) – V(OUT); V(AC) = 4.75-V AC input current limit set to 2.75 A
VACDO
350
375
mV
(typ), IO(OUT) = 1 A
VUSBDO = V(USB) – V(OUT); V(USB) = 4.6 V
I(OUT) + I(BAT)= 0.5 A
175
190
mV
VUSBDO
USB switch dropout voltage
USB input current limit set to 2.75 A (typ)
I(OUT) + I(BAT)= 0.1 A
35
45
mV
Battery switch dropout
VBATDODCH
V(BAT): 3 V
→ VCH(REG), I(BAT) = –1 A
60
100
mV
voltage, discharge
Battery switch dropout
VBATDOCH
Charger on, V(BAT): 3 V
→ 4.2 V, I(BAT) = 1 A
60
100
mV
voltage, charge
POWER PATH INPUT CURRENT LIMIT
Selected Input current limit,
Selected input switch not in dropout, I2C settings : ISET2 = LO,
IINP(LIM1)
80
100
mA
applies to USB input only
PSEL = LO
Selected Input current limit,
IINP(LIM2)
400
500
mA
Selected input switch not in dropout, I2C settings: ISET2 = HI, PSEL = LO
applies to USB input only
Selected Input current limit,
Selected input switch not in dropout, I2C settings: ISET2 = HI OR LO,
IINP(LIM3)
applies to either AC or USB
2.75
A
PSEL = HI
input
SYSTEM REGULATION VOLTAGE
VSYS(REG) = V(OUT), DPPM loop not active, selected input current limit not
VSYS(REG)
Output regulation voltage
4.6
4.7
V
reached. Selected input voltage (AC or USB) > 5.1 V
POWER PATH PROTECTION AND RECOVERY FUNCTIONS
Input-to-output short-circuit
VINOUTSH
AC and USB switches set to OFF if V(OUT) < VINOUTSH
0.6
V
detection threshold
OUT short-circuit recovery
RSH(USBSH)
V(OUT) < 1 V, internal resistor connected from USB to OUT
500
pullup resistor
OUT short-circuit recovery
RSH(ACSH)
V(OUT) < 1 V, internal resistor connected from AC to OUT
500
pullup resistor
Overvoltage detection
Rising voltage, overvoltage detected when V(AC) > VOVP or
6
6.5
6.8
V
threshold
V(USB) > VOVP
VOVP
Overvoltage detection
Falling voltage, relative to detection threshold
0.1
V
hysteresis
Battery-to-output short-circuit
VBATOUTSH
BAT switch set to OFF if V(BAT) – V(OUT)> VBATOUTSH
200
mV
detection threshold
Battery-to-ouput short-circuit
V(DPPM) < 1V, tBLK(SHBAT) = KBLK(SHBAT) × CDPPM, CDPPM capacitor is connected
KBLK(SHBAT)
1
mS/nF
blanking time constant
from DPPM pin to AGND1
OUT short-circuit recovery
V(BAT) – V(OUT) > VBATOUTSH,
ISH(BAT)
10
mA
pullup current source
Internal current source connected between OUT and BAT
BAT short-circuit recovery
V(BAT) < 1V,
RSHBAT)
1
k
resistor
Internal resistor connected from OUT to BAT
Internal resistor connected from BAT to AGND1 when battery is not detected
RDCH(BAT)
BAT pulldown resistor
500
by ANLG1
8
Copyright 2006–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS65820
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