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参数资料
型号： TPS53126PW
厂商： TEXAS INSTRUMENTS INC
元件分类： 稳压器
英文描述： 0.17 A DUAL SWITCHING CONTROLLER, 700 kHz SWITCHING FREQ-MAX, PDSO24
封装： PLASTIC, TSSOP-24
文件页数： 26/30页
文件大小： 899K
代理商： TPS53126PW
TPS53126
www.ti.com........................................................................................................................................................................................................ SLUS909 – MAY 2009
ELECTRICAL CHARACTERISTICS (continued)
over recommended free-air temperature range, VIN = 12 V (Unless otherwise noted)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
VFB VOLTAGE and DISCHARGE RESISTANCE
Bandgap initial regulation
VBG
TA = 25°C
-1.0%
1.0%
accuracy
TA = 25°C, TEST2 = 0 V, SWinj = OFF
755
765
775
VVFBTHLx
VFBx threshold voltage
mV
TA = –40°C to 85°C, TEST2 = 0 V, SWinj = OFF
(1)
752
778
TA = 25°C, TEST2 = V5FILT, SWinj = OFF
748
758
768
VVFBTHHx
VFBx threshold voltage
mV
TA = –40°C to 85°C, TEST2 = V5FILT, SWinj = OFF
(1)
745
771
IVFB
VFB input current
VFBx = 0.8 V, TA = 25°C
–0.01
±0.1
A
RDischg
VO discharge resistance
ENx = 0 V, VOx = 0.5 V, TA = 25°C
40
80
VREG5 OUTPUT
TA = 25°C, 5.5 V < VIN < 24 V,
VVREG5
VREG5 output voltage
4.8
5.0
5.2
V
0 < IVREG5 < 10 mA
VLN5
Line regulation
5.5 V < VIN < 24 V, IVREG5 = 10 mA
20
mV
VLD5
Load regulation
1 mA < IVREG5 < 10 mA
40
mV
IVREG5
Output current
VIN = 5.5 V, VVREG5 = 4 V, TA = 25°C
170
mA
OUTPUT: N-CHANNEL MOSFET GATE DRIVERS
Source, IDRVHx = –100 mA
5.5
11
RDRVH
DRVH resistance
Sink, IDRVHx = 100 mA
2.5
5
Source, IDRVLx = –100 mA
4
8
RDRVL
DRVL resistance
Sink, IDRVLx = 100 mA
2
4
DRVHx-low to DRVLx-on
20
50
80
TD
Dead time
ns
DRVLx-low to DRVHx-on
20
40
80
INTERNAL BOOST DIODE
VFBST
Forward voltage
VVREG5-VBSTx, IF = 10 mA, TA = 25°C
0.7
0.8
0.9
V
IVBSTLK
VBST leakage current
VBSTx = 29 V, SWx = 24 V, TA = 25°C
0.1
1
A
ON-TIME TIMER CONTROL
TON1L
CH1 on time
SW1 = 12 V, VO1 = 1.8 V, TEST2 = 0 V
490
ns
TON2L
CH2 on time
SW2 = 12 V, VO2 = 1.8 V, TEST2 = 0 V
390
ns
TOFF1L
CH1 min off time
SW1 = 0.7 V, TA = 25°C, VFB1 = 0.7 V, TEST2 = 0 V
285
ns
TOFF2L
CH2 min off time
SW2 = 0.7 V, TA = 25°C, VFB2 = 0.7 V, TEST2 = 0 V
285
ns
TON1H
CH1 on time
SW1 = 12 V, VO1 = 1.8 V, TEST2 = V5FILT
165
ns
TON2H
CH2 on time
SW2 = 12 V, VO2 = 1.8 V, TEST2 = V5FILT
140
ns
SW1 = 0.7 V, TA = 25°C, VFB1 = 0.7 V, TEST2 =
TOFF1H
CH1 min off time
216
ns
V5FILT
SW2 = 0.7 V, TA = 25°C, VFB2 = 0.7 V, TEST2 =
TOFF2H
CH2 min off time
216
ns
V5FILT
SOFT START
Tss
Internal SS time
Internal soft start VFBx = 0.735 V
0.85
1.2
1.4
ms
UVLO
Wake up
3.7
4.0
4.3
VUV5VFILT
V5FILT UVLO threshold
V
Hysteresis
0.2
0.3
0.4
LOGIC THRESHOLD
VENH
ENx H-level input voltage
EN
2.0
V
VENL
ENx L-level input voltage
EN
0.3
V
CURRENT SENSE
ITRIP
TRIP source current
VTRIPx = 0.1 V, TA = 25°C
8.5
10
11.5
A
(1)
Ensured by design. Not production tested.
Copyright 2009, Texas Instruments Incorporated
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