LP3996 datasheet(7/26 Pages) TI1

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LP3996

www.ti.com

SNVS360B – NOVEMBER 2006 – REVISED JANUARY 2008

Electrical Characteristics

(1) (2)

Unless otherwise noted, VEN = 950mV, VIN = VOUT + 1.0V, or 2.0V, whichever is higher, where VOUT is the higher of VOUT1 and

VOUT2. CIN = 1 µF, IOUT = 1 mA, COUT1 = COUT2 = 1.0µF.

Typical values and limits appearing in normal type apply for TA = 25°C. Limits appearing in boldface type apply over the full

junction temperature range for operation,

−40 to +125°C.

Limit

Symbol

Parameter

Conditions

Typ

Units

Min

Max

VIN

Input Voltage

(3)

ΔVOUT

Output Voltage Tolerance

IOUT = 1mA

1.5V < VOUT ≤ 3.3V

-2.5

+2.5

-3.75

+3.75

VOUT ≤ 1.5V

-2.75

+2.75

-4

Line Regulation Error

VIN = (VOUT(NOM) + 1.0V) to 6.0V

0.03

0.3

%/V

Load Regulation Error

IOUT = 1mA to 150mA

155

(LDO 1)

µV/mA

IOUT = 1mA to 300mA

(LDO 2)

VDO

Dropout Voltage

IOUT = 1mA to 150mA

110

220

(4)

(LDO 1)

IOUT = 1mA to 300mA

210

550

(LDO 2)

Quiescent Current

LDO 1 ON, LDO 2 ON

100

IOUT1= IOUT2 = 0mA

LDO 1 ON, LDO 2 OFF

110

IOUT1 = 150mA

µA

LDO 1 OFF, LDO 2 ON

110

IOUT2 = 300mA

LDO 1 ON, LDO 2 ON

170

IOUT1 = 150mA, IOUT2 = 300mA

VEN1 = VEN2 = 0.4V

0.5

ISC

Short Circuit Current Limit

LDO 1

420

750

LDO 2

550

840

IOUT

Maximum Output Current

LDO 1

150

LDO 2

300

PSRR

Power Supply Rejection Ratio (5)

f = 1kHz, IOUT = LDO1

1mA to 150mA

LDO2

CBYP = 10nF

f = 20kHz, IOUT

LDO1

= 1mA to

150mA

LDO2

CBYP = 10nF

Output noise Voltage (5)

BW = 10Hz to

VOUT = 0.8V

100kHz

µVRMS

VOUT = 3.3V

CBYP = 10nF

TSHUTDOWN

Thermal Shutdown

Temperature

160

°C

Hysteresis

Enable Control Characteristics

IEN

Input Current at VEN1 or VEN2

VEN = 0.0V

0.005

0.1

µA

VEN = 6V

(1)

All Voltages are with respect to the potential at the GND pin.

(2)

Min Max limits are guaranteed by design, test or statistical analysis. Typical numbers are not guaranteed, but do represent the most

likely norm.

(3)

VIN(MIN) = VOUT(NOM) + 0.5V, or 2.0V, whichever is higher.

(4)

Dropout voltage is voltage difference between input and output at which the output voltage drops to 100mV below its nominal value.

This parameter only for output voltages above 2.0V

(5)

This electrical specification is guaranteed by design.

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