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TPS62051DGSRG4 Datasheet(PDF) 5 Page - Texas Instruments

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Part # TPS62051DGSRG4
Description  800-mA Synchronous Step-Down Converter
Download  30 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS62051DGSRG4 Datasheet(HTML) 5 Page - Texas Instruments

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TPS62050, TPS62051, TPS62052, TPS62054, TPS62056
www.ti.com
SLVS432F – SEPTEMBER 2002 – REVISED JUNE 2015
8.5 Electrical Characteristics
VI = 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
2.7
10
V
I(Q)
Operating quiescent current
IO = 0 mA, SYNC = GND, VI = 7.2 V
12
20
µA
EN = GND
1.5
5
I(SD)
Shutdown current
µA
EN = GND, TA = 25°C
1.5
3
Quiescent current with enhanced LBI comparator
IQ(LBI)
EN = VI, LBI = GND, TPS62051 only
5
µA
version.
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
µA
I(EN)
EN input current
0.6 V
≤ V(EN) ≤ 4 V
2
µA
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
µA
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
µA
POWER GOOD OUTPUT, LBI, LBO
V(PG)
Power good trip voltage
Vml –2%
V
VO ramping positive
50
Power good delay time
µs
VO ramping negative
200
VOL
PG, LBO output low voltage
V(FB) = 0.8 × VO nominal, I(sink) = 1 mA
0.3
V
PG, LBO output leakage current
V(FB) = VO nominal, V(LBI) = VI
0.01
0.25
µA
Minimum supply voltage for valid power good, LBO
2.3
V
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
µA
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
µA
SYNC trip point hysteresis
100
mV
Duty cycle of external clock signal
20%
90%
OUTPUT
VO
Adjustable output voltage
TPS62050, TPS62051
0.7
6
V
V(FB)
Feedback voltage
TPS62050, TPS62051
0.5
V
FB leakage current
TPS62050, TPS62051
0.02
0.1
µA
Feedback voltage tolerance
TPS62050, TPS62051 VI = 2.7 V to 10 V, 0 mA < IO < 600 mA
–3%
3%
Copyright © 2002–2015, Texas Instruments Incorporated
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Product Folder Links: TPS62050 TPS62051 TPS62052 TPS62054 TPS62056


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