参数资料
型号: TPS650243RHBT
厂商: TEXAS INSTRUMENTS INC
元件分类: 电源管理
英文描述: 2-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC32
封装: 5 X 5 MM, GREEN, PLASTIC, QFN-32
文件页数: 23/35页
文件大小: 955K
代理商: TPS650243RHBT
RECOMMENDED OPERATING CONDITIONS
www.ti.com .............................................................................................................................................................. SLVS774B – JUNE 2007 – REVISED JULY 2009
MIN
NOM
MAX
UNIT
VINDCDC1,
2.5
6.0
V
VINDCDC2,
Input voltage range step-down converters
VINDCDC3, VCC
VDCDC1
Output voltage range for VDCDC1 step-down converter(1)
0.6
VINDCDC1
V
VDCDC2
Output voltage range for mem step-down converter(1)
0.6
VINDCDC2
V
VDCDC3
Output voltage range for core step-down converter
0.9
1.5
V
VINLDO1, VINLDO2
Input voltage range for LDOs
1.5
6.5
V
VLDO1-2
Output voltage range for LDOs
1.0
3.3
V
IOUTDCDC1
Output current at L1
1600
mA
L1
Inductor at L1(2)
1.5
2.2
H
CINDCDC1
Input capacitor at VINDCDC1
(2)
10
F
COUTDCDC1
Output capacitor at VDCDC1
(2)
10
22
F
IOUTDCDC2
Output current at L2
1600
mA
L2
Inductor at L2(2)
1.5
2.2
H
CINDCDC2
Input capacitor at VINDCDC2
(2)
10
F
COUTDCDC2
Output capacitor at VDCDC2
(2)
10
22
F
IOUTDCDC3
Output current at L3
800
mA
L3
Inductor at L3(2)
1.5
2.2
H
CINDCDC3
Input capacitor at VINDCDC3
(2)
10
F
COUTDCDC3
Output capacitor at VDCDC3
(2)
10
22
F
CVCC
Input capacitor at VCC(2)
1
F
Cin1-2
Input capacitor at VINLDO(2)
1
F
COUT1-2
Output capacitor at VLDO1, VLDO2(2)
2.2
F
ILDO1,2
Output current at VLDO1, VLDO2
200
mA
CVRTC
Output capacitor at Vdd_alive(2)
2.2
F
IVdd_alive
Output current at Vdd_alive
30
mA
TA
Operating ambient temperature
–40
85
°C
TJ
Operating junction temperature
–40
125
°C
RCC
Resistor from VINDCDC3,VINDCDC2, VINDCDC1 to Vcc used for filtering(3)
1
10
(1)
When using an external resistor divider at DEFDCDC2, DEFDCDC1.
(2)
See applications section for more information, for Vout > 2.85V choose 3.3
H inductor.
(3)
Up to 2.5mA can flow into Vcc when all 3 converters are running in PWM, this resistor will cause the UVLO threshold to be shifted
accordingly.
Copyright 2007–2009, Texas Instruments Incorporated
3
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