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参数资料
| 型号： | TPS53124RGET |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | DUAL SWITCHING CONTROLLER, PQCC24 |
| 封装： | GREEN, PLASTIC, QFN-24 |
| 文件页数： | 17/22页 |
| 文件大小： | 656K |
| 代理商： | TPS53124RGET |
ELECTRICAL CHARACTERISTICS
SLUS825B – FEBRUARY 2008 – REVISED MAY 2008 ..................................................................................................................................................... www.ti.com
over operating free-air temperature range, , VIN = 12 V, (unless otherwise noted)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
Supply Current
VIN current, TA = 25°C, VREG5 tied to V5FLT,
IIN
VIN supply current
EN1 = EN2 = 5 V, VFB1 = VFB2 = 0.8 V, LL1 =
450
800
A
LL2 = 0.5 V
IVINSDN
VIN shutdown current
VIN current, TA = 25°C, no load, EN1 = EN2 = 0 V
10
VFB Voltage and Discharge Resistance
Bandgap initial regulation
VBG
TA = 25°C
-1%
1%
accuracy
TA = 25°C
755
765
775
VFB threshold voltage
VVFBTH
mV
TA = -40°C to 85°C
752
778
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
VVREG5
VREG5 output voltage
TA = 25°C ,5.5 V < VIN < 24 V, 0 < IVREG5 < 10 mA
4.8
5
5.2
V
VLN5
Line regulation
5.5 V < VIN < 24 V, IVREG5 = 10 mA
20
mV
VLD5
Load regulation
1 mA < IVREG5 < 10 mA
40
IVREG5
Output current
VIN = 5.5 V, VREG5 = 4.0 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 BST Diode
VFBST
Forward voltage
VVREG5-VBSTx, IF = 10 mA, TA = 25°C
0.7
0.8
0.9
V
IVBSTLK
VBST leakage current
VBST = 29 V, LL = 24 V, TA = 25°C
0.1
1
A
ON-Time Timer Control
TON1
CH1 ON time
LL1 = 12 V, VO1 = 1.5 V
390
TON2
CH2 ON time
LL2 = 12 V, VO2 = 1.05 V
210
ns
TON(min)
CH2 ON time
LL2 = 12 V, VO2 = 0.76 V
160
TOFF(min)
CH1/CH2 min OFF time
LL = 0.7 V TA = 25°C, VFB = 0.7 V
390
Soft Start
TSS
Internal SS time
Internal soft start VFB = 0.735 V
0.85
1.2
1.4
ms
4
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): TPS53124
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