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参数资料
| 型号： | TPS2458RHBR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC32 |
| 封装： | PLASTIC, QFP-32 |
| 文件页数： | 23/28页 |
| 文件大小： | 966K |
| 代理商： | TPS2458RHBR |
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SLUS916 – FEBRUARY 2009 ............................................................................................................................................................................................ www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
over operating free-air temperature range (unless otherwise noted)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
12-V UVLO
UVLO rising
IN12 rising
8.1
8.5
8.9
V
UVLO hysteresis
IN12 falling
0.44
0.5
0.59
12-V BLOCKING
Turn-on threshold
Measure VSENP – VVOUT
5
10
15
mV
Turn-off threshold
Measure VSENP – VVOUT
–6
–3
0
Turn-off delay
20-mV overdrive, CBLK = 0 pF, tP50-50
200
300
ns
12-V GATE DRIVERS (PASS, BLK)
Output voltage
VVIN12 = VVOUT12 = 10 V
21.5
23
24.5
V
Sourcing current
VVIN12 = VVOUT12 = 10 V, VPASS= VBLK = 17 V
20
30
40
mA
Sinking current
Fast turnoff, VPASS = VBLK = 14 V
0.5
1
A
4 V
≤ VPASS = VBLK ≤ 25 V
6
14
25
mA
Pulldown resistance
In OTSD ( at 150°C )
14
20
26
k
Fast turn-off duration
5
10
15
ms
Safety gate pulldown
IRF3710, slew S or D 15 V in 1mS
1.25
V
Disable delay
EN12 pin to PASS and BLK, tP50-90
1
ms
Startup time
IN12 rising to PASS and BLK sourcing
0.25
3.3-V SUMMING NODE
Summing threshold
655
675
695
mV
3.3-V CURRENT LIMIT
On-resistance
IOUT3 = 150 mA
290
500
m
Current limit
RSUM3 = 3.3 k , VVOUT3 = 0 V
170
195
225
mA
Fast trip threshold
240
300
400
Fast turn-off delay
IOUT3= 400 mA, tP50-50
750
1300
ns
3.3-V UVLO
UVLO rising
IN3 rising
2.65
2.75
2.85
V
UVLO hysteresis
IN3 falling
200
240
300
mV
Safety gate pulldown1
Slew IN3x, OUT3x 5 V in 1 ms
15
mA
SUPPLY CURRENTS
Both channels enabled
IOUT3 = 0
3.1
4
mA
Both channels disabled
2
2.8
THERMAL SHUTDOWN
Whole-chip shutdown
TJ rising, IOUT3 = 0
140
150
temperature
3.3-V channel shutdown
TJ rising, IOUT3 in current limit
°C
130
140
temperature
Hysteresis
Whole chip or 3.3-V channel
10
4
Copyright 2009, Texas Instruments Incorporated
Product Folder Link(s): TPS2458
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