參數(shù)資料
型號(hào)： TPS62050DGSG4
廠(chǎng)商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 穩(wěn)壓器
英文描述： 1.4 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO10
封裝： GREEN, PLASTIC, MSOP-10
文件頁(yè)數(shù)： 19/25頁(yè)
文件大小： 602K
代理商： TPS62050DGSG4
www.ti.com
TPS62050, TPS62051
TPS62052, TPS62054, TPS62056
SLVS432D – SEPTEMBER 2002 – REVISED OCTOBER 2003
ELECTRICAL CHARACTERISTICS
V
I =7.2 V, VO = 3.3 V, IO = 300 mA, EN = VI, TA =-40°C to 85°C unless otherwise noted
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY CURRENT
VI
Input voltage range
2.7
10
V
IO = 0 mA, SYNC = GND,
I(Q)
Operating quiescent current
12
20
A
VI = 7.2 V
EN = GND
1.5
5
I(SD)
Shutdown current
A
EN = GND, TA=25°C
1.5
3
Quiescent current with enhanced LBI
EN = VI, LBI=GND,
IQ(LBI)
5
A
comparator version.
TPS62051 only
ENABLE
VIH
EN high level input voltage
1.3
V
VIL
EN low level input voltage
0.3
V
EN trip point hysteresis
100
mV
Ilkg
EN input leakage current
EN = GND or VIN, VI=7.2 V
0.01
0.2
A
I(EN)
EN input current
0.6 V
≤ V
(EN)≤ 4 V
2
A
V(UVLO)
Undervoltage lockout threshold
1.6
V
POWER SWITCH
VI ≥ 5.4 V; IO = 300 mA
400
650
rDS(on)
P-channel MOSFET on-resistance
m
VI = 2.7 V; IO = 300 mA
600
850
P-channel MOSFET leakage current
VDS = 10 V
1
A
P-channel MOSFET current limit
VI = 7.2V, VO = 3.3 V
1000
1200
1400
mA
VI ≥ 5.4 V; IO = 300 mA
300
450
rDS(on)
N-channel MOSFET on-resistance
m
VI = 2.7 V; IO = 300 mA
450
550
N-channel MOSFET leakage current
VDS = 6 V
1
A
POWER GOOD OUTPUT, LBI, LBO
V(PG)
Power good trip voltage
Vml -2%
V
VO ramping positive
50
s
Power good delay time
VO ramping negative
200
V(FB) = 0.8 x VO nominal,
VOL
PG, LBO output low voltage
0.3
V
I(sink) = 1 mA
V(FB) = VO nominal,
PG, LBO output leakage current
0.01
0.25
A
V(LBI) = VI
Minimum supply voltage for valid power
2.3
V
good, LBO signal
V(LBI)
Low battery input trip voltage
Input voltage falling
1.21
V
Low battery input trip point accuracy
1.5%
V(LBI,HYS)
Low battery input hysteresis
15
mV
Ilkg(LBI)
LBI leakage current
0.01
0.1
A
OSCILLATOR
fS
Oscillator frequency
600
850
1000
kHz
f(SYNC)
Synchronization range
600
1200
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
0.1
A
SYNC trip point hysteresis
100
mV
Duty cycle of external clock signal
20%
90%
OUTPUT
Adjustable output voltage
TPS62050,
VO
0.7
6.0
V
range
TPS62051
TPS62050,
V(FB)
Feedback voltage
0.5
V
TPS62051
TPS62050,
FB leakage current
0.02
0.1
A
TPS62051
3
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