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| 型号： | TPS2231PW |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO20 |
| 封装： | GREEN, PLASTIC, TSSOP-20 |
| 文件页数： | 34/40页 |
| 文件大小： | 1410K |
| 代理商： | TPS2231PW |
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SLVS536J – JULY 2004 – REVISED SEPTEMBER 2009.................................................................................................................................................. www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
TJ = 25°C, VI(3.3VIN) = VI(AUXIN) = 3.3 V, VI(1.5VIN) = 1.5 V, VI(/SHDNx), VI(/STBYx) = 3.3 V, VI(/CPPEx) = VI(/CPUSBx) = 0 V,
VI(/SYSRST) = 3.3 V, OCx and RCLKENx and PERSTx are open, all voltage outputs unloaded (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
II(AUXIN)
125
200
Normal operation of
II(3.3VIN)
17.5
25
μA
TPS2236
Outputs are unloaded,
II(1.5VIN)
5.5
15
Operation input
II
TJ [–40, 120°C] (does not include CPPEx and
quiescent current
II(AUXIN)
85
150
CPUSBx logic pullup currents)
Normal operation of
II(3.3VIN)
10
15
μA
TPS2231
II(1.5VIN)
2.5
10
II(AUXIN)
200
320
Normal operation of
II(3.3VIN)
17.5
25
μA
TPS2236
II(1.5VIN)
5.5
15
Outputs are unloaded, TJ[–40, 120°C] (include
CPPEx and CPUSBx logic pullup currents)
II(AUXIN)
120
210
Normal operation of
II(3.3VIN)
10
15
μA
TPS2231
II(1.5VIN)
2.5
10
Total input
II
quiescent current
II(AUXIN)
250
440
Shutdown mode of
II(3.3VIN)
3.5
20
μA
TPS2236
CPUSB = CPPE = 0 V SHDN = 0 V (discharge
II(1.5VIN)
0.1
20
FETs are on) (include CPPEx and CPUSBx logic
pullup currents and SHDN pullup current) TJ [–40,
II(AUXIN)
144
270
120°C]
Shutdown mode of
II(3.3VIN)
3.5
10
μA
TPS2231
II(1.5VIN)
0.5
10
II(AUXIN)
40
100
TPS2236
II(3.3VIN)
0.1
100
μA
SHDN = 3.3 V, CPUSB = CPPE = 3.3 V (no card
II(1.5VIN)
0.1
100
Forward leakage
present, discharge FETs are on); current measured
Ilkg(FWD)
current
at input pins, TJ = 120°C, includes RCLKEN pullup
II(AUXIN)
20
50
current
TPS2231
II(3.3VIN)
0.1
50
μA
II(1.5VIN)
0.1
50
TJ = 25°C
0.1
10
II(AUXOUT)
μA
TJ = 120°C
50
Reverse leakage
VO(AUXOUT) = VO(3.3VOUT)= 3.3 V;
TJ = 25°C
0.1
10
current
Ilkg(RVS)
II(3.3VOUT)
μA
VO(1.5VOUT) = 1.5 V; All voltage inputs are grounded
(TPS2236 and
TJ = 120°C
50
(current measured from output pins going in)
TPS2231)
TJ = 25°C
0.1
10
II(1.5VOUT)
μA
TJ = 120°C
50
LOGIC SECTION (SYSRST, SHDNx, STBYx, PERSTx, RCLKENx, OCx, CPUSBx, CPPEx)
SYSRST = 3.6 V, sinking
0
1
Logic input
I(SYSRST)
Input
TPS2231-2
0
1
μA
supply current
SYSRST = 0 V, sourcing
TPS2231, TPS2231-1
10
30
SHDNx = 3.6 V, sinking
0
1
I(SHDNx)
Input
μA
SHDNx = 0 V, sourcing
10
30
STBYx = 3.6 V, sinking
0
1
I(STBYx)
Input
μA
STBYx = 0 V, sourcing
10
30
I(RCLKENx)
Input
RCLKENx = 0 V, sourcing
10
30
μA
CPUSB or CPPE = 0 V, sinking
0
1
I(CPUSBx) or
Inputs
μA
I(CPPEx)
CPUSB or CPPE = 3.6 V, sourcing
10
30
High level
2
Logic input
V
voltage
Low level
0.8
RCLEN output low voltage
Output
IO(RCLKEN) = 60 μA
0.4
V
3.3VOUT falling
2.7
3
PERST assertion threshold of output voltage (PERST
AUXOUT falling
2.7
3
V
asserted when any output voltage falls below the threshold)
1.5VOUT falling
1.2
1.35
PERST assertion delay from output voltage
3.3VOUT, AUXOUT, or 1.5VOUT falling
500
ns
4
Copyright 2004–2009, Texas Instruments Incorporated
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