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参数资料
| 型号： | TPS2491DGSG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10 |
| 封装： | GREEN, PLASTIC, MSOP-10 |
| 文件页数： | 19/24页 |
| 文件大小： | 534K |
| 代理商： | TPS2491DGSG4 |
SLVS503C
– NOVEMBER 2003 – REVISED SEPTEMBER 2011
ELECTRICAL CHARACTERISTICS (continued)
unless otherwise noted, minimum and maximum limits apply across the recommended operating junction temperature and
voltage range, VTIMER = 0 V, and all outputs unloaded; typical specifications are at TJ = 25°C, VVCC = 48 V, VTIMER = 0 V, and
all outputs unloaded; positive currents are into pins.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
POWER GOOD OUTPUT (PG)
IPG = 2 mA
0.1
0.25
V
VPG_L
Low voltage (sinking)
IPG = 4 mA
0.25
0.5
V
PG threshold voltage, VOUT rising, PG goes
VPGTL
VSENSE = VVCC, measure V(VCC-OUT)
0.8
1.25
1.7
V
open drain
PG threshold voltage, VOUT falling, PG goes
VPGTH
VSENSE = VVCC, measure V(VCC-OUT)
2.2
2.7
3.2
V
low
ΔVPGT
PG threshold hysteresis voltage, V(SENSE-OUT)
VSENSE = VVCC
1.4
V
PG deglitch delay, detection to output, rising
tDPG
VSENSE = VVCC
5
9
15
ms
and falling edges
Leakage current, PG false, open drain
10
A
OUTPUT VOLTAGE FEEDBACK INPUT (OUT)
VOUT = VVCC, VEN = Hi, sinking
8
20
A
IOUT
Bias current
VOUT = GND, VEN = Lo, sourcing
18
40
A
ENABLE INPUT (EN)
VEN_H
Threshold, VEN going high
1.32
1.35
1.38
V
VEN_L
Threshold, VEN going low
1.22
1.25
1.28
V
VEN hysteresis
100
mV
Leakage current
VEN = 48 V
1
A
INPUT SUPPLY UVLO (VCC)
VVCC turn on
Rising
8.4
8.8
V
VVCC turn off
Falling
7.5
8.3
V
Hysteresis
75
mV
4
Copyright
2003–2011, Texas Instruments Incorporated
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