TPS75003 datasheet(3/31 Pages) TI

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TPS75003

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SBVS052I – OCTOBER 2004 – REVISED AUGUST 2010

ELECTRICAL CHARACTERISTICS

VEN1 = VIN1, VEN2 = VIN2, VEN3 = VIN3, VIN1 = VIN2 = 2.2V, VIN3 = 3.0V, VOUT3 = 2.5V, COUT1 = COUT2 = 47mF, COUT3 = 2.2mF,

TA = –40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNIT

Supply and Logic

Input Voltage Range

VINX

2.2

6.5

(IN1, IN2, IN3)(1)

Quiescent Current, IQ = IDGND +

IOUT1 = IOUT2 = 0mA, IOUT3 = 1mA

150

IAGND

ISHDN

Shutdown Supply Current

VEN1 = VEN2 = VEN3 = 0V

0.05

3.0

Enable High, enabled

VIH1, 2

1.4

VINX

(EN1, EN2)

VIH3

Enable High, enabled (EN3)

1.14

VIN3

Enable Low, shutdown

VILX

0.3

(EN1, EN2, EN3)

Enable pin current

IENX

0.01

0.5

(EN1, EN2, EN3)

Buck Controllers 1 and 2

Adjustable Output Voltage

VOUT1,2

VFBX

VINX

Range(2)

VFB1,2

Feedback Voltage (FB1, FB2)

1.220

Feedback Voltage Accuracy(1)

–2

(FB1, FB2)

IFB1,2

Current into FB1, FB2 pins

0.01

0.5

Reference Voltage for Current

VIS1,2

100

120

Sense

IIS1,2

Current into IS1, IS2 Pins

0.01

0.5

Measured with the circuit in Figure 1,

ΔVOUT%/ΔVIN Line Regulation

(1)

0.1

% / V

VOUT + 0.5V ≤ VIN ≤ 6.5V

ΔVOUT%/ΔIOU

Measured with the circuit in Figure 1,

Load Regulation

0.6

% / A

30mA

≤ I OUT ≤ 2A

Measured with the circuit in Figure 1,

n 1,2

Efficiency(3)

IOUT = 1A

Measured with the circuit in Figure 1,

tSTR1,2

Startup Time(3)

RL = 6Ω, COUT = 100mF, CSS = 2.2nF

Gate Driver P-Channel and

VIN1,2 > 2.5V

RDS,ON1,2

N-Channel MOSFET

Ω

VIN1,2 = 2.2V

On-Resistance

Gate Driver P-Channel and

ISW1,2

N-Channel MOSFET Drive

100

Current

tON

Minimum On Time

1.36

1.55

1.84

tOFF

Minimum Off Time

0.44

0.65

0.86

(1)

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 2.2V, whichever is greater.

(2)

Maximum VOUT depends on external components and will be less than VIN.

(3)

Depends on external components.

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