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| 型号： | TPS51727RHARG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PQCC40 |
| 封装： | 6 X 6 MM, GREEN, PLASTIC, QFN-40 |
| 文件页数： | 38/42页 |
| 文件大小： | 0K |
| 代理商： | TPS51727RHARG4 |
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www.ti.com ..................................................................................................................................................... SLUS806B – APRIL 2008 – REVISED JANUARY 2009
ELECTRICAL CHARACTERISTICS (continued)
over recommended free-air temperature range, V5IN = V5FILT = 5.0 V GFB = PGND = GND, VFB = VOUT (Unless otherwise
noted).
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
POWER MONITOR
VPWRLK
Leakage Level Power Output
VDAC = 0.5 V, ΣΔCS = 5 mV
125
280
mV
VPWRLO
Low Level Power Output
VDAC = 1 V, ΣΔCS = 10 mV
180
500
750
mV
VPWRMID
Mid Level Power Output
VDAC = 1.2 V, ΣΔCS = 20 mV
0.75
1.10
1.41
V
VPWRHI
High Level Power Output
VDAC = 1.2875 V, ΣΔCS = 40 mV
1.92
2.25
2.56
V
KPWR
Gain Factor
47.6
V/V
IPWRSRC
Power Monitor Source
VPWR – 30 mV
800
900
1100
A
IPWRSNK
Power Monitor Sink
VPWR + 30 mV
130
200
350
A
DRIVERS: HIGH SIDE, LOW SIDE, CROSS CONDUCTION PREVENTION AND BOOST RECTIFIER
VBSTx – LLx = 5 V, HI State, VBST – VDRVH = 0.25 V
1.2
2.5
RDRVH
DRVH On Resistance
VBSTx – LLx = 5V, LO State, VDRVH – VLL = 0.25 V
0.8
2.5
DRVHx =2.5 V, VBSTx – LLx = 5 V, Src
2.2
IDRVH
DRVH Sink/Source Current(1)
A
DRVHx =2.5 V, VBSTx – LLx = 5 V, Snk
2.2
21
40
TDRVH
DRVH Transition Time
DRVHx 10% to 90% or 90% to 10%, CDRVHx = 3 nF
ns
15
40
HI State, V5IN – VDRVL = 0.25 V
0.9
2
RDRVL
DRVL On Resistance
LO State, VDRVL – PGND = 0.25 V
0.4
1
DRVLx = 2.5 V, Source
2.7
IDRVL
DRVL Sink/Source Current(1)
A
DRVLx = 2.5 V, Sink
8
DRVLx 90% to 10%, CDRVLx = 3 nF
10
35
TDRVL
DRVL Transition Time
ns
DRVLx 10% to 90%, CDRVLx = 3 nF
20
35
LLx falls to 1V to DRVLx rises to 1 V
10
23
35
TNONOVLP
Driver Non Overlap Time
ns
DRVLx falls to 1V to DRVHx rises to 1 V
15
30
43
VFBST
BST Rectifier Forward Voltage
V5IN – VBST, IF = 5 mA, TA = 25°C
0.6
0.7
0.8
V
IBSTLK
BST Rectifier Leakage Current
VVBST = 34 V, VLL = 28 V
0.1
1
A
OVERSHOOT REDUCTION (OSR) THRESHOLD SETTING
OSRSEL = GND
75
110
140
OSRSEL = REF
105
145
180
VOSR
OSR Voltage Set
mV
OSRSEL = 3.3 V
145
190
235
OSRSEL = V5FILT
OFF
VOSRHYS
OSR Voltage Hysteresis(1)
All settings
20
mV
(1)
Ensured by design. Not production tested.
Copyright 2008–2009, Texas Instruments Incorporated
5
Product Folder Link(s): TPS51727
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