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| 型号： | TPS62111RSATG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 2.4 A SWITCHING REGULATOR, 1100 kHz SWITCHING FREQ-MAX, PQCC16 |
| 封装： | GREEN, PLASTIC, QFN-16 |
| 文件页数： | 23/28页 |
| 文件大小： | 842K |
| 代理商： | TPS62111RSATG4 |
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SLVS585A – JULY 2005 – REVISED FEBRUARY 2009 .................................................................................................................................................... www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
VI = 12 V, VO = 3.3 V, IO = 600 mA, EN = VI, TA = –40°C to 85°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
OSCILLATOR
fS
Oscillator frequency
900
1000
1100
kHz
f(SYNC)
Synchronization range
CMOS-logic clock signal on SYNC pin
800
1400
kHz
VIH
SYNC high-level input voltage
1.5
V
VIL
SYNC low-level input voltage
0.3
V
Ilkg
SYNC input leakage current
SYNC = GND or VIN
0.01
0.2
A
SYNC trip-point hysteresis
170
mV
SYNC input current
0.6 V
≤ V(SYNC) ≤ 4 V
10
20
A
Duty cycle of external clock signal
30%
90%
OUTPUT
VO
Adjustable output voltage range
TPS62110
1.153
16
V
VFB
Feedback voltage
TPS62110
1.153
V
FB leakage current
TPS62110
10
100
nA
VI = 3.1 V to 17 V;
Feedback voltage tolerance
TPS62110
–2%
2%
0 mA < IO < 1500 mA
(2)
VI = 3.8 V to 17 V;
TPS62111
–3%
3%
0 mA < IO < 1500 mA
(2)
Fixed output-voltage tolerance(3)
VI = 5.5 V to 17 V;
TPS62112
–3%
3%
0 mA < IO < 1500 mA
(2)
VI ≥ 3 V (once undervoltage lockout
100
voltage exceeded)
VI ≥ 3.5 V
500
IO
Maximum output current
mA
VI ≥ 4.3 V
1200
VI ≥ 6 V
1500
Current into internal voltage divider for
5
A
fixed voltage versions
VI = 7.2 V; VO = 3.3 V; IO = 600 mA
η
Efficiency
92%
VI = 12 V, Vo = 5 V, Io = 600 mA
Duty-cycle range for main switches
at 1 MHz
10%
100%
Minimum ton time for main switch
100
ns
Shutdown temperature
145
°C
Start-up time
IO = 800 mA, VI = 12 V, Vo = 3.3 V
1
ms
(2)
The maximum output current depends on the input voltage. See the maximum output current for further restrictions on the minimum
input voltage.
(3)
The output voltage accuracy includes line and load regulation over the full temperature range TA = –40°C to 85°C. See the No-Load
Operation section in this data sheet.
4
Copyright 2005–2009, Texas Instruments Incorporated
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