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参数资料
| 型号： | TPS65055RSMR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 1.8 A DUAL SWITCHING CONTROLLER, 2475 kHz SWITCHING FREQ-MAX, PQCC32 |
| 封装： | 4 X 4 MM, GREEN, PLASTIC, QFN-32 |
| 文件页数： | 23/41页 |
| 文件大小： | 1276K |
| 代理商： | TPS65055RSMR |
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ELECTRICAL CHARACTERISTICS
www.ti.com.......................................................................................................................................................................................... SLVS844 – SEPTEMBER 2008
RECOMMENDED OPERATING CONDITIONS (continued)
over operating free-air temperature range (unless otherwise noted)
MIN
NOM
MAX
UNIT
IOUTDCDC1
Output current at L1
600
mA
L1
Inductor at L1(1)
1.5
2.2
H
CINDCDC1/2
Input capacitor at VINDCDC1/2(1)
22
F
COUTDCDC1
Output capacitor at VDCDC1(1)
10
22
F
IOUTDCDC2
Output current at L2
600
mA
L2
Inductor at L2(1)
1.5
2.2
H
COUTDCDC2
Output capacitor at VDCDC2(1)
10
22
F
CVCC
Input capacitor at VCC (1)
1
F
Cin1-2
Input capacitor at VINLDO1/2(1)
2.2
F
Cin3-4
Input capacitor at VINLDO3/4(1)
2.2
F
COUT1-2
Output capacitor at VLDO1-4(1)
2.2
F
ILDO1,2
Output current at VLDO1,2
400
mA
ILDO3,4
Output current at VLDO3,4
200
mA
TA
Operating ambient temperature
–40
85
°C
TJ
Operating junction temperature
–40
125
°C
RCC
Resistor from battery voltage to Vcc used for filtering
(2)
1
10
(1)
See application section for more details.
(2)
Up to 2 mA can flow into Vcc when both converters are running in PWM, this resistor causes the UVLO threshold to be shifted
accordingly.
VIN = 3.6 V, EN = VIN, MODE = GND, L = 2.2 H, COUT = 22 F, TA = –40°C to 85°C, Typical values are at TA = 25°C (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY CURRENT
Vcc
Input voltage range
2.5
6.0
V
One converter, IOUT = 0 mA. PFM mode enabled; device not
switching, EN_DCDC1 = VIN or EN_DCDC2 = VIN;
30
40
A
EN_LDO1 = EN_LDO2 = EN_LDO3/4 = GND
Operating quiescent current
Two converters, IOUT = 0 mA, PFM mode device not switching,
IQ
Total current into VCC, VINDCDC1/2, VINLDO1, EN_DCDC1 = VIN and EN_DCDC2 = VIN;
40
55
A
VINLDO2, VINLDO3/4
EN_LDO1 = EN_LDO2 = EN_LDO3/4 = GND
One converter, IOUT = 0 mA, PFM mode enabled; device not
switching, EN_DCDC1 = VIN or EN_DCDC2 = VIN;
190
260
A
EN_LDO1 = EN_LDO2 = EN_LDO3 = EN_LDO4 = VIN
One converter, IOUT = 0 mA,
Switching with no load, PWM operation EN_DCDC1 = VIN or
0.85
mA
EN_DCDC2 = VIN;
EN_LDO1 = EN_LDO2 = EN_LDO3/4 = GND
IQ
Operating quiescent current into VCC
Two converters, IOUT = 0 mA,
Switching with no load, PWM operation EN_DCDC1 = VIN AND
1.25
mA
EN_DCDC2 = VIN;
EN_LDO1 = EN_LDO2 = EN_LDO3/4 = GND
EN_DCDC1 = EN_DCDC2 = GND
I(SD)
Shutdown current
18
22
A
EN_LDO1 = EN_LDO2 = EN_LDO3 = EN_LDO4 = GND
Undervoltage lockout threshold for DCDC
V(UVLO)
Voltage at VCC
1.8
2
V
converters and LDOs
EN_DCDC1, EN_DCDC2, DEFDCDC2, DEFLDO1, DEFLDO2, EN_LDO1, EN_LDO2, EN_LDO3, EN_LDO4
High-level input voltage, SDAT, SCLK,
VIH
1.2
VCC
V
EN_DCDC1, EN_DCDC2, DEFDCDC2,
EN_LDO1, EN_LDO2, EN_LDO3, EN_LDO4
Low-level input voltage SDAT, SCLK,
VIL
0
0.4
V
EN_DCDC1, EN_DCDC2, EN_LDO1,
EN_LDO2, EN_LDO3, EN_LDO4, DEFDCDC2
Copyright 2008, Texas Instruments Incorporated
3
Product Folder Link(s): TPS65055
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