FDG326P datasheet(5/29 Pages) TI

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TPS75003-EP

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SGLS311A

– DECEMBER 2006 – REVISED MARCH 2011

ELECTRICAL CHARACTERISTICS (continued)

VEN1 = VIN1, VEN2 = VIN2, VEN3 = VIN3, VIN1 = VIN2 = 2.2 V, VIN3 = 3 V, VOUT3 = 2.5V, COUT1 = COUT2 = 47 μF, COUT3 = 2.2 μF,

TA = -55°C to 125°C, unless otherwise noted. Typical values are at TA = 25°C.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNIT

LDO

VOUT3

Output voltage range (4)

6.5 - VDO

VFB3

Feedback pin voltage

0.507

2.95 V

≤ VIN3 ≤ 6.5 V

Feedback pin voltage accuracy(5)

±4%

1 mA

≤ IOUT3 ≤ 300 mA

ΔVOUT%/ΔVIN

Line regulation(5)

VOUT3 + 0.5V ≤ VIN3 ≤ 6.5 V

0.075

% / V

ΔVOUT%/ΔIOUT

Load regulation

10 mA

≤ IOUT3 ≤ 300 mA

0.01

% / mA

Dropout voltage

VDO

IOUT3 = 300 mA

250

350

(VIN = VOUT(NOM) - 0.1)

(6)

ICL3

Current limit

VOUT = 0.9 x VOUT(NOM)

375

600

1000

IFB3

Current into FB3 pin

0.03

0.1

μA

BW = 100 Hz - 100 kHz,

Output noise

400

μVRMS

IOUT3 = 300 mA

Shutdown, temperature increasing

175

Thermal shutdown temperature for

tSD

°C

LDO

Reset, temperature decreasing

160

Undervoltage lockout threshold

VIN rising

1.8

UVLO

Undervoltage lockout hysteresis

VIN falling

100

(4)

Maximum VOUT is dependent on external components and will be less than VIN. Parameter is not production tested.

(5)

To be in regulation, minimum VIN1 (or VIN2) must be greater than VOUT1,NOM (or VOUT2,NOM) by an amount determined by external

components. Minimum VIN3 = VOUT3 + VDO or 2.2 V, whichever is greater.

(6)

VDO does not apply when VOUT + VDO < 2.2 V.

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