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TPS62403 Datasheet(PDF) 3 Page - Texas Instruments

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Part # TPS62403
Description  2.25MHz 400mA/600mA Dual Step-Down Converter In Small 3x3mm QFN Package
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS62403 Datasheet(HTML) 3 Page - Texas Instruments

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ELECTRICAL CHARACTERISTICS
TPS62400
,, TPS62401
TPS62403
SLVS681C – JUNE 2006 – REVISED DECEMBER 2006
V
IN = 3.6V, VOUT = 1.8V, EN = VIN, MODE = GND, L = 2.2µH, COUT = 20µF, TA = –40°C to 85°C typical values are at TA =
25
°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY CURRENT
VIN
Input voltage range
2.5
6.0
V
One converter, IOUT = 0mA. PFM mode
19
29
µA
enabled (Mode = 0) device not switching,
EN1 = 1 OR EN2 = 1
Two converter, IOUT = 0mA. PFM mode
32
48
µA
enabled (Mode = 0) device not switching,
IQ
Operating quiescent current
EN1 = 1 AND EN2 = 1
IOUT = 0mA, MODE/DATA = GND, for one
23
µA
converter, VOUT 1.575V(1)
IOUT = 0mA, MODE/DATA = VIN, for one
3.6
mA
converter, VOUT 1.575V (1)
EN1, EN2 = GND, VIN = 3.6V(2)
1.2
3
ISD
Shutdown current
µA
EN1, EN2 = GND, VIN ramped from 0V to
0.1
1
3.6V(3)
Falling
1.5
2.35
VUVLO
Undervoltage lockout threshold
V
Rising
2.4
ENABLE EN1, EN2
VIH
High-level input voltage, EN1, EN2
1.2
VIN
V
VIL
Low-level input voltage, EN1, EN2
0
0.4
V
IIN
Input bias current, EN1, EN2
EN1, EN2 = GND or VIN
0.05
1.0
µA
DEF_1 INPUT
VDEF_1H
DEF_1 high level input voltage
DEF_1 pin is a digital input at TPS62401
0.9
VIN
V
fixed output voltage option
VDEF_1L
DEF_1 low level input voltage
DEF_1 pin is a digital input at TPS62401
0
0.4
V
fixed output voltage option
IIN
Input bias current DEF_1
DEF_1 GND or VIN
0.01
1.0
µA
MODE/DATA
VIH
High-level input voltage, MODE/DATA
1.2
VIN
V
VIL
Low-level input voltage, MODE/DATA
0
0.4
V
IIN
Input bias current, MODE/DATA
MODE/DATA = GND or VIN
0.01
1.0
µA
VOH
Acknowledge output voltage high
Open drain, via external pullup resistor
VIN
V
VOL
Acknowledge output voltage low
Open drain, sink current 500
µA
0
0.4
V
INTERFACE TIMING
tStart
Start time
2
µs
tH_LB
High time low bit, logic 0 detection
Signal level on MODE/DATA pin is > 1.2V
2
200
µs
tL_LB
Low time low bit, logic 0 detection
Signal level on MODE/DATA pin < 0.4V
2x
400
µs
tH_LB
tL_HB
Low time high bit, logic 1 detection
Signal level on MODE/DATA pin < 0.4V
2
200
µs
tH_HB
High time high bit, logic 1 detection
Signal level on MODE/DATA pin is > 1.2V
2x
400
µs
tL_HB
TEOS
End of Stream
TEOS
2
µs
tACKN
Duration of acknowledge condition
VIN 2.5V to 6V
400
520
µs
(MODE/DATE line pulled low by the
device)
tvalACK
Acknowledge valid time
2
µs
(1)
Device is switching with no load on the output, L = 3.3
µH, value includes losses of the coil
(2)
These values are valid after the device has been already enabled one time (EN1 or EN2 = high) and supply voltage VIN has not
powered down.
(3)
These values are valid when the device is disabled (EN1 and EN2 low) and supply voltage VIN is powered up. The values remain valid
until the device has been enabled first time (EN1 or EN2 = high). After first enable, Note 3 becomes valid.
3
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