LP38500-ADJ, LP38502-ADJ

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SNVS539H – NOVEMBER 2007 – REVISED SEPTEMBER 2015

6.5 Electrical Characteristics

Unless otherwise specified VIN = 3.3 V, IOUT = 10 mA, CIN = 10 μF, COUT = 10 μF, VEN = VIN, VOUT = 1.8 V. Minimum and

maximum limits apply over the junction temperature (TJ) range of –40°C to +125°C and are specified through test, design, or

statistical correlation. Typical values represent the most likely parametric norm at TJ = 25°C, and are provided for reference

purposes only.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

2.7 V

≤ VIN ≤ 5.5 V

10 mA

≤ IOUT ≤ 1.5 A

0.584

0.605

0.626

TJ = 25°C

VADJ

Adjust pin voltage(1)

V

2.7 V

≤ VIN ≤ 5.5 V

0.575

0.635

10 mA

≤ IOUT ≤ 1.5 A

2.7 V

≤ VIN ≤ 5.5 V

10 mA

≤ IOUT ≤ 1.5 A

0.596

0.605

0.614

TJ = 25°C

VADJ

Adjust pin voltage (A grade)(1)

V

2.7 V

≤ VIN ≤ 5.5 V

0.587

0.623

10 mA

≤ IOUT ≤ 1.5 A

2.7 V

≤ VIN ≤ 5.5 V

50

nA

TJ = 25°C

IADJ

ADJUST pin bias current

2.7 V

≤ VIN ≤ 5.5 V

750

nA

IOUT = 1.5 A

220

275

mV

TJ = 25°C

VDO

Dropout voltage(2)

IOUT = 1.5 A

375

mV

2.7 V

≤ VIN ≤ 5.5 V

0.04

%/V

ΔVOUT /

TJ = 25°C

Output voltage line regulation(1)(3)

ΔVIN

2.7 V

≤ VIN ≤ 5.5 V

0.05

%/V

10 mA < IOUT < 1.5 A

0.18

%/A

ΔVOUT /

Output voltage load regulation(1)

TJ = 25°C

ΔIOUT

(4)

10 mA < IOUT < 1.5 A

0.33

%/A

10 mA < IOUT < 1.5 A

2

3.5

Ground pin current in normal

TJ = 25°C

IGND

mA

operation mode

10 mA < IOUT < 1.5 A

4.5

VEN < VIL(EN), TJ = 25°C

0.025

0.125

IDISABLED

Ground pin current

µA

VEN < VIL(EN)

15

IOUT(PK)GN

Peak output current

VOUT ≥ VOUT(NOM) – 5%

3.6

A

D

ISC

VOUT = 0 V, TJ = 25°C

3.7

A

Short-circuit current

VOUT = 0 V

2

ENABLE INPUT (LP38502 Only)

VIH(EN)

Enable logic high

VOUT = ON

1.4

V

VIL(EN)

Enable logic low

VOUT = OFF

0.65

V

Time from VEN < VIL(EN) to VOUT =

td(off)

Turnoff delay

OFF

25

µs

ILOAD = 1.5 A

Time from VEN >VIH(EN) to VOUT = ON

td(on)

Turnon delay

25

µs

ILOAD = 1.5A

IIH(EN)

Enable pin high current

VEN = VIN

1

nA

IIL(EN)

Enable pin low current

VEN = 0 V

0.1

(1)

The line and load regulation specification contains only the typical number. However, the limits for line and load regulation are included

in the adjust voltage tolerance specification.

(2)

Dropout voltage is defined as the minimum input to output differential voltage at which the output drops 2% below the nominal value. For

any output voltage less than 2.5V, the minimum VIN operating voltage is the limiting factor.

(3)

Output voltage line regulation is defined as the change in output voltage from the nominal value due to change in the input line voltage.

(4)

Output voltage load regulation is defined as the change in output voltage from the nominal value due to change in the load current.

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