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| 型號(hào)： | TPS65161PWPRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 4.2 A SWITCHING REGULATOR, 900 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封裝： | GREEN, PLASTIC, HTSSOP-28 |
| 文件頁(yè)數(shù)： | 29/34頁(yè) |
| 文件大?。?/td> | 847K |
| 代理商： | TPS65161PWPRG4 |
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SLVS617D – APRIL 2006 – REVISED SEPTEMBER 2009 ............................................................................................................................................... www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
VIN = 12 V, SUP = VIN, EN1 = EN2 = VIN, VS = 15 V, V(LOGIC) = 3.3 V, TA = –40°C to 85°C, typical values are at TA = 25°C
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
CONTROL AND SOFT START DLY1, DLY2, SS
I(DLY1)
Delay1 charge current
3.3
4.8
6.2
μA
I(DLY2)
Delay2 charge current
V(THRESHOLD) = 1.213 V
3.3
4.8
6.2
μA
ISS
SS charge current
6
9
12
μA
INTERNAL OSCILLATOR
FREQ = high
600
750
900
fOSC
Oscillator frequency
kHz
FREQ = low
400
500
600
BOOST CONVERTER (VS)
VS
Output voltage range(1)
19
V
V(FB)
Feedback regulation voltage
1.136
1.146
1.156
V
I(FB)
Feedback input bias current
10
100
nA
N-MOSFET on-resistance (Q1)
I(SW) = 500 mA
100
185
m
rDS(on)
P-MOSFET on-resistance (Q2)
I(SW) = 200 mA
10
16
IMAX
Maximum P-MOSFET peak switch current
1
A
ILIM
N-MOSFET switch current limit (Q1)
TPS65161
2.8
3.5
4.2
A
ILIM
N-MOSFET switch current limit (Q1)
TPS65161A
3.7
4.6
5.5
A
Ilkg
Switch leakage current
V(SW) = 15 V
1
10
μA
OVP
Overvoltage protection
VOUT rising
19.5
20
21
V
10.6 V
≤ VIN ≤ 11.6 V
Line regulation
0.0008
%/V
at 1 mA
Load regulation
0.03
%/A
GATE DRIVE (GD)
V(GD)
Gate drive threshold(2)
V(FB) rising
VS-12%
VS-8% VS-4%
V
VOL
GD output low voltage
I(sink) = 500 μA
0.3
V
GD output leakage current
V(GD) = 20 V
0.05
1
μA
STEP-DOWN CONVERTER (V(LOGIC))
V(LOGIC) Output voltage range
1.8
5
V
V(FBB)
Feedback regulation voltage
1.195
1.213
1.231
V
I(FBB)
Feedback input bias current
10
100
nA
rDS(on)
N-MOSFET on-resistance (Q5)
I(SW) = 500 mA
175
300
m
ILIM
N-MOSFET switch current limit (Q5)
2.5
3.2
3.9
A
Ilkg
Switch leakage current
V(SW) = 0 V
1
10
μA
10.6 V
≤ VIN ≤ 11.6 V
Line regulation
0.0018
%/V
at 1 mA
Load regulation
0.037
%/A
(1)
The maximum output voltage is limited by the overvoltage protection threshold and not be the maximum switch voltage rating.
(2)
The GD signal is latched low when the main boost converter output VS is within regulation. The GD signal is reset when the input
voltage or enable of the boost converter is cycled low.
4
Copyright 2006–2009, Texas Instruments Incorporated
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