Data Sheet

ADPL20502

analog.com

Rev 0

4 of 27

(VIN = 1.5V, RSEL = 191kΩ, VOUT = 3.3V, TJ = -40°C to +125°C, typical values are at TJ = +25°C, CIN = 22μF, COUT = 22μF,

unless otherwise noted.) (1)

PARAMETER

SYMBOL

CONDITIONS/COMMENTS

MIN

TYP

MAX

UNITS

Inductor Peak Current

Limit

VOUT = 3.3V

TJ = -40°C to

+125°C

1.8

2.0

2.2

High-Side RDSON

RDS_H

VOUT= 3.3V

105

175

mΩ

Low-Side RDSON

RDS_L

VOUT= 3.3V

55

100

mΩ

Zero Crossing Threshold

IZX_LX

(6)

25

50

75

mA

Soft Start Rate

tSS_RATE

Target VOUT = 5.0V

3

V/ms

Enable Input Leakage

ILEAK_EN

TJ = +25°C, VEN = 5.5V

0.3

100

nA

Enable Voltage

Threshold

VEN_IH

VEN Rising, LX begins switching

0.6

0.95

V

VEN_IL

VEN Falling, LX stops switching

0.15

0.55

Required Select Resistor

Accuracy

ACCRSEL

Note: Use the resistor from Table 4.

-1

+1

%

Select Resistor

Detection Time

tRSEL

CRSEL < 2pF (7)

240

600

1320

μs

Thermal Shutdown

Threshold

TSHUT

OUT disabled

TJ Rising

165

°C

TJ Falling

150

.

1

Limits over the specified operating temperature and supply voltage range are guaranteed by design and

characterization, and production tested at room temperature only.

2

Guaranteed by the Required Select Resistor Accuracy parameter.

3

Output Accuracy in Low-Power mode when IOUT > IOUT_TRANSITION and inductor current is not in Continuous

Conduction mode. This accuracy does not include load, line, or ripple.

4

Output Accuracy in Ultra-Low-Power mode when IOUT < IOUT_TRANSITION. This accuracy does not include load, line, or

ripple.

5

Guaranteed by measuring LX frequency and duty cycle. Maximum duty cycle is a function of input voltage since

LX on time varies with VIN.

6

This is static measurement. The actual peak current limit depends on VIN and L due to propagation delays.

7

This is the time required to acquire the RSEL value. This time adds to the startup time.