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| 型号： | TPS65530RSLRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 3.3 A SWITCHING REGULATOR, 1650 kHz SWITCHING FREQ-MAX, PQCC48 |
| 封装： | 6 X 6 MM, 0.40 MM PITCH, GREEN, PLASTIC, QFN-48 |
| 文件页数： | 30/31页 |
| 文件大小： | 931K |
| 代理商： | TPS65530RSLRG4 |
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SLVS744C – OCTOBER 2007 – REVISED MAY 2008....................................................................................................................................................... www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
0
°C ≤ T
J ≤ 125°C, 1.8 V ≤ VCC2 ≤ 5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP(1)
MAX
UNIT
VOUT7
Output voltage(8)
VCC7 < VOUT7
3
20
V
VCC7 > 2.4 V, VOUT7 = 15 V,
Feedback resistance: R1 = 47 k
,
IOUT7_L
Lower output current(6)
3.7
5
6.3
mA
R2 = 680 k
, Rsense = 10 ,
B_ADJ pin voltage = 0 V
VCC7 > 2.4 V, VOUT7 = 15 V,
Feedback resistance: R1 = 47 k
,
IOUT7_H
Higher output current(6)
23.7
25
26.3
mA
R2 = 680 k
, Rsense = 10 ,
B_ADJ pin voltage = 1 V
VFBV
FBV reference voltage
No load
0.97
1
1.03
V
Overvoltage protection threshold
1.15
1.25
1.35
V
(sensing at FBV pin)
Overcurrent protection threshold
0.8
1.2
A
Nch FET ON resistance(7)
700
1200
m
Max duty cycle
86
91
99
%
Load switch ON resistance
2
4
Load switch leakage current
1
A
(between C-IN and FBC)
RB-ADJ
B-ADJ pin input impedance
1
m
Ω
CH8
TA = 25°C,
1.8
5.5
Start up (XSLEEP from AGND to VCC2)
Supply voltage(9)
V
XSLEEP = VCC2
1.5
5.5
VPS
Output voltage(9)
3.3
5.5
V
XSLEEP = H, ENAFE = AGND, No load
1.23
1.25
1.27
VFB8
FB8 reference voltage
V
CH8 operation mode: PFM mode, No load
1.2
1.25
1.35
Fixed ON time at PFM mode
VCC2 = 3.6 V
250
ns
Max duty cycle
76
85
92
%
Source impedance
VPS = 5 V, ISW = 100 mA
5
7.5
SW8LD
driver
Sink impedance
VPS = 5 V, ISW = –100 mA
1
1.5
Source impedance
VPS = 5 V, ISW = 100 mA
10
15
SW8HD
Ω
driver
Sink impedance
VPS = 5 V, ISW = –100 mA
5
7.5
Overvoltage protection threshold
1.3
1.56
1.8
V
(sensing at FB8 pin)
FBG7/8 FET ON resistance
VPS = 5 V, XSLEEP = VCC2
0.6
k
FBG7/8 leakage current
XSLEEP = AGND, ENAFE = AGND
1
A
(8)
Due to constant current control for CH7, the operating condition is that Input voltage is less than LED supply voltage (output voltage).
(9)
Specified by design
8
Copyright 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS65530
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