TPS51427_12 datasheet(5/41 Pages) TI1

Part #	TPS51427

Description	DUAL D-CAP??SYNCHRONOUS STEP-DOWN CONTROLLER FOR NOTEBOOK POWER RAILS

Download	41 Pages

Scroll/Zoom	100%

Manufacturer	TI1 [Texas Instruments]

Direct Link	http://www.ti.com

Logo

5 / 41 page

TPS51427

www.ti.com................................................................................................................................................ SLUS819B – APRIL 2008 – REVISED SEPTEMBER 2008

ELECTRICAL CHARACTERISTICS (continued)

Over recommended free-air temperature range, VV5DRV = 5 V, VVIN = 12 V (unless otherwise noted).

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

LINEAR REGULATOR (LDO)

4.94

5.11

LDOREFIN = VSW = 0 V, 0 < ILDO < 10 0mA,

5.025

6 V< VIN< 28 V

(–1.7%)

(+1.7%)

3.28

3.38

LDOREFIN = 5 V, VSW = 0 V, 0 < ILDO < 100 mA,

LDO Output Voltage

3.33

V

5.5 V < VIN < 28 V

(–1.5%)

(+1.5%)

0.98

1.02

LDOREFIN = 0.5 V, VSW = 0 V, 0 < ILDO < 50 mA,

1.00

5.5V < VIN < 28 V

(–2%)

(+2%)

LDOREFIN Input Range

VLDO = 2 × VLDOREFIN

0.35

2.25

V

LDOREFIN Leakage Current

VLDOREFIN = 0 V or 5 V

–0.5

0.5

µA

Fixed LDO = 5 V

0.15

LDOREFIN Threshold Voltage

V

Fixed LDO = 3.3 V

3.90

LDO Output Current

VSW = GND , VIN = 5.5 V to 28 V

100

mA

LDO Output Current During

VSW = 5 V , VIN = 5.5 V to 28 V, LDOREFIN = 0 V

340

500

mA

Switchover to 5 V

LDO Output Current During

VSW = 3.3 V , VIN = 5.5 V to 28 V, LDOREFIN = 5 V

330

500

mA

Switchover to 3.3 V

LDO Short-Circuit Current

VSW = LDO = 0 V

140

180

220

mA

4.63

4.78

4.93

Rising edge of VSW, LDOREFIN = 0 V

(92.6%)

(95.6%)

(98.6%)

LDO 5-V Switchover Threshold

V

Hysteresis

0.20

3.05

3.15

3.25

Rising edge of VSW, LDOREFIN = 5 V

(92.5%)

(95.5%)

(98.5%)

LDO 3.3-V Switchover Threshold

V

Hysteresis

0.150

LDO Switchover Switch On

LDO to VSW, VSW = 5 V, ILDO = 100 mA

0.7

1.5

Ω

Resistance

LDO Switchover Delay

Turning on

3.96

ms

Falling edge of V5FILT

3.80

3.93

4.10

LDO Undervoltage Lockout

V

Threshold

Rising edge of V5FILT

4.20

4.37

4.50

Falling edge of VIN

1.8

VIN POR Threshold

V

Rising edge of VIN

2.1

Thermal-Shutdown Threshold

Hysteresis = +10°C (2)

+140

°C

3.3V ALWAYS-ON LINEAR REGULATOR (VREF3)

3.250

3.350

No external load, VVSW > 4.5 V

3.300

(–1.5%)

(+1.5%)

VREF3 Output Voltage

V

3.220

3.380

No external load, VVSW < 4.0 V

3.300

(–2.4%)

(+2.4%)

VREF3 Load Regulation

0 mA < ILOAD < 10 mA

60

mV

VREF3 Current Limit

VREF3 = GND

15

20

mA

Falling edge of VREF3

2.96

VREF3 Undervoltage Lockout

V

Threshold

Hysteresis

0.17

(2)

Ensured by design. Not production tested.

Submit Documentation Feedback

5

Product Folder Link(s): TPS51427

Similar Part No. - TPS51427_12

Manufacturer	Part #	Datasheet	Description
Texas Instruments	TPS51427	2Mb / 41P	[Old version datasheet] DUAL D-CATM SYNCHRONOUS STEP-DOWN CONTROLLER FOR NOTEBOOK POWER RAILS

More results

Similar Description - TPS51427_12

Manufacturer	Part #	Datasheet	Description
Texas Instruments	TPS51427	2Mb / 41P	[Old version datasheet] DUAL D-CAP??SYNCHRONOUS STEP-DOWN CONTROLLER FOR NOTEBOOK POWER RAILS
	TPS51427A	2Mb / 42P	[Old version datasheet] DUAL D-CAP??SYNCHRONOUS STEP-DOWN CONTROLLER FOR NOTEBOOK POWER RAILS
	TPS51427A	2Mb / 43P	[Old version datasheet] DUAL D-CAP??SYNCHRONOUS STEP-DOWN CONTROLLER FOR NOTEBOOK POWER RAILS
	TPS51427	2Mb / 41P	[Old version datasheet] DUAL D-CATM SYNCHRONOUS STEP-DOWN CONTROLLER FOR NOTEBOOK POWER RAILS
	TPS53128	788Kb / 29P	[Old version datasheet] DUAL SYNCHRONOUS STEP-DOWN CONTROLLER FOR LOW VOLTAGE POWER RAILS
	TPS53127	843Kb / 29P	[Old version datasheet] DUAL SYNCHRONOUS STEP-DOWN CONTROLLER FOR LOW VOLTAGE POWER RAILS
	TPS51124	1Mb / 22P	[Old version datasheet] DUAL SYNCHRONOUS STEP-DOWN CONTROLLER FOR LOW VOLTAGE POWER RAILS
	TPS53129	761Kb / 29P	[Old version datasheet] DUAL SYNCHRONOUS STEP-DOWN CONTROLLER FOR LOW VOLTAGE POWER RAILS
	TPS53124	719Kb / 22P	[Old version datasheet] Dual Synchronous Step-Down Controller For Low-Voltage Power Rails
	TPS53127	482Kb / 23P	[Old version datasheet] DUAL SYNCHRONOUS STEP-DOWN CONTROLLER FOR LOW VOLTAGE POWER RAILS

More results

TPS51427 Datasheet(PDF) 5 Page - Texas Instruments

TPS51427 Datasheet(HTML) 5 Page - Texas Instruments

Similar Part No. - TPS51427_12

Similar Description - TPS51427_12

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41

Datasheet Download

Link URL