LP5996

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SNVS415C – NOVEMBER 2006 – REVISED MAY 2013

Electrical Characteristics

(1) (2) (continued)

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

Parameter

Test Conditions

Typ

Units

Min

Max

PSRR

Power Supply Rejection

f = 1kHz, IOUT = 1mA

LDO1

58

Ratio(5)

to 150mA

LDO2

70

CBYP = 10nF

dB

f = 20kHz, IOUT =

LDO1

45

1mA to 150mA

LDO2

60

CBYP = 10nF

en

Output noise Voltage(5)

BW = 10Hz to

VOUT = 0.8V

36

100kHz

µVRMS

VOUT = 3.3V

75

CBYP = 10nF

TSHUTDOWN

Thermal Shutdown

Temperature

160

°C

Hysteresis

20

Enable Control Characteristics

IEN

Input Current at VEN1 or VEN2

VEN = 0.0V

0.005

0.1

µA

VEN = 6V

2

5

VIL

Low Input Threshold

0.4

V

VIH

High Input Threshold

0.95

V

Timing Characteristics

TON

Turn On Time (5)

To 95% Level

300

µs

CBYP = 10nF

Transient

Line Transient Response

Trise = Tfall = 10µs

20

Response

|

δVOUT|

(5)

δVIN = 1VCBYP = 10nF

Load Transient Response

Trise = Tfall = 1µs

LDO 1

mV

175

|

δVOUT|

(5)

IOUT = 1mA to 150mA

(pk - pk)

LDO 2

150

IOUT = 1mA to 300mA

(5)

This electrical specification is ensured by design.

Output Capacitor, Recommended Specifications

Limit

Parameter

Test Conditions

Nom

Units

Min

Max

COUT

Output Capacitance

Capacitance

1.0

0.7

µF

(1)

ESR

5

500

m

Ω

(1)

The Capacitor tolerance should be 30% or better over temperature. The full operating conditions for the application should be

considered when selecting a suitable capacitor to ensure that the minimum value of capacitance is always met. Recommended

capacitor is X7R. However, depending on the application, X5R, Y5V and Z5U can also be used. (See capacitor section in Applications

Hints).

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