參數(shù)資料
型號： TPS2492PW
廠商： TEXAS INSTRUMENTS INC
元件分類： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14
封裝： GREEN, PLASTIC, TSSOP-14
文件頁數(shù)： 28/33頁
文件大?。?/td> 1096K
代理商： TPS2492PW
SLUSA65A – JULY 2010 – REVISED AUGUST 2010
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
9 V
≤ VVCC ≤ 80 V, -40°C ≤ TJ ≤ 125°C, VTIMER = 0 V and all outputs unloaded. Typical specification are at TJ = 25°C, VVCC =
48 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Gate Drive Output (GATE)
GATE sourcing current
VSENSE = VVCC; V(GATE-OUT) = 7 V; VUVEN = Hi
15
22
35
A
VUVEN = Lo; VGATE = VVCC
1.8
2.4
2.8
IGATE
GATE sinking current
mA
VUVEN = Hi; VGATE = VVCC; VVCC- VSENSE =
75
125
250
200 mV
VUVEN = Hi, VCC = SENSE = OUT, measure
VGATE
GATE output
12
16
V
VGATE -VOUT
Propagation delay: UVEN going
VUVEN = 0 → 2.5 V, 50% of VUVEN to 50% of
tD_ON
25
40
high to GATE output high
VGATE, VOUT = VVCC, R(GATE-OUT) = 1 MΩ
VUVEN = 2.5 V → 0 V, 50% of VUVEN to 50%
Propagation delay: UVEN going
tD_OFF
of VGATE, VOUT = VVCC, R(GATE-OUT) = 1 MΩ,
0.5
1
low to GATE output low
s
tFALL < 0.1 s
VTIMER: 0 → 5 V, tRISE < 0.1 s. 50% of
Propagation delay: TIMER expires
tD_FAULT
VTIMER to 50% of VGATE, VOUT = VCC ,
0.8
1
to GATE output low
R(GATE-OUT) = 1 MΩ,
Power Good Output (PG)
IPG = 2 mA
0.1
0.25
Low voltage (sinking)
IPG = 4 mA
0.25
0.5
PG threshold voltage; VOUT rising;
VSENSE = VVCC; measure V(VCC-OUT)
0.8
1.25
1.7
PG goes low
V
PG threshold voltage; VOUT
VSENSE = VVCC; measure V(VCC-OUT)
2.2
2.7
3.2
falling; PG goes open drain
PG threshold hysteresis voltage;
VSENSE = VVCC
1.4
V(SENSE-OUT)
PG deglitch delay; detection to
tDPG
VSENSE = VVCC
5
9
15
ms
output; rising and falling edges
ILEAKAGE
Leakage current; PG false
open drain
10
A
Overvoltage Input (OV)
VOV_H
OV rising
1.31
1.35
1.39
V
Threshold voltage
Hysteresis
70
90
110
mV
ILEAKAGE
Leakage current (sinking)
VOV = 5 V
1
A
tOFF
Turn off time
VOV = 0 → 2.5 V to VGS < 1 V, CGATE = 2 nF
2
s
Maximum duration of OV strong
Gate pull down
40
100
220
pull down
Output Voltage Feedback (OUT)
VOUT = VVCC, VUVEN = Hi; sinking
8
20
IOUT
Bias current
A
VOUT = GND; VUVEN = Lo; sourcing
18
40
Load Current Monitor (IMON) Output
Maximum output voltage
VCC – VSENSE = 200 mV
2.6
2.8
3
V
ISOURCE
Source current
1.9
mA
ISINK
Sink current
60
A
Gain (VIMON/V(VCC-SENSE))
46
48
50
V/V
VOFFSET
Offset voltage
-50
-5
30
mV
Error relative to curve fit, 5 mV < (VCC –
Linearity(1)
0.3%
VSENSE )
Output Ripple(1)
8
mVPP
(1)
These parameters are provided for reference only, and do not constitute part of TI's published device specifications for purposes of TI's
product warranty.
4
Copyright 2010, Texas Instruments Incorporated
Product Folder Link(s): TPS2492 TPS2493
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