參數(shù)資料
型號： TPS40042DRCTG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： SWITCHING CONTROLLER, 700 kHz SWITCHING FREQ-MAX, PDSO10
封裝： 3 X 3 MM, GREEN, PLASTIC, SON-10
文件頁數(shù)： 31/35頁
文件大?。?/td> 746K
代理商： TPS40042DRCTG4
www.ti.com
SLUS777 – NOVEMBER 2007
ELECTRICAL CHARACTERISTICS (continued)
TJ = -40 °C to 85°C VVDD = 5 V, (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SOFT START/ENABLE
Calibration time before softstart
tCAL
(3)
1.0
1.6
2.5
begins
FB rise time from 0 V to VREFIN = 1.5
ms
tSS
(3)
Soft start time(4)
4.5
6.0
7.5
V
tREG
Time to voltage regulation
Sum of tCAL plus tSS ; VREFIN = 1.5 V
5.5
7.6
10
VEN
Enable threshold
EN voltage w.r.t. VVDD
-0.8
-1.2
-1.6
V
VENHYS
Enable hysteresis
50
mV
BOOTSTRAP
RBOOT3V3
VBOOT to VVDD, VVDD = 3.3 V
50
Bootstrap switch resistances
RBOOT5V
VBOOT to VVDD, VVDD = 5 V
30
OUTPUT DRIVER
VBOOT - VSW = 3.3 V, ISRCE = 100
RHDHI3V3
HDRV pull-up resistance
3.0
5.5
mA
RHDLO3V3
HDRV pull-down resistance
VBOOT - VSW = 3.3 V, ISINK = 100 mA
1.5
3
RLDHI3V3
LDRV pull-up resistance
VVDD = 3.3 V, ISOURCE = 100 mA
3.0
5.5
RLDLO3V3
LDRV pull-down resistance
VVDD = 3.3 V, ISINK = 100 mA
1.0
2.0
tRISE
(5)
LDRV, HDRV rise time
CLOAD = 1 nF
15
35
tFALL
(5)
LDRV, HDRV fall time
CLOAD = 1 nF
10
25
ns
TDEAD HL
Adaptive timing HDRV to LDRV
No load
15
30
45
TDEAD LH
Adaptive timing LDRV to HDRV
No load
5
15
35
SWITCH NODE
ILEAK
Leakage current
VEN = VVDD
-2
A
THERMAL SHUTDOWN
tSD
(5)
Shutdown temperature
145
°C
Hysteresis
15
(3)
tCAL and tSS track with temperature and input voltage
(4)
Soft start time is a function of VREFIN. See Applications section for further detail.
(5)
Ensured by design. Not production tested.
Copyright 2007, Texas Instruments Incorporated
5
Product Folder Link(s): TPS40042
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