Data Sheet

ADPL20502

analog.com

Rev 0

3 of 27

SPECIFICATIONS

Table 1. Electrical Characteristics

(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

Minimum Input Voltage

VIN_MIN

Runs from output after startup, IOUT =

1mA

600

mV

Input Voltage Range

VIN

Guaranteed by LX Maximum On-

Time, VOUT > VIN + 150mV while in

regulation

0.95

5.5

V

Minimum Startup Input

Voltage

VIN_START

RL ≥ 3kΩ, Typical Application Circuit,

TJ = +25°C

0.9

0.95

V

Output Voltage Range

VOUT_RANGE

See . For VIN < VOUT target. (2)

2.3

5.5

V

Output Accuracy, LPM

VACC_LPM

VOUT Falling (3)

-1.2

+1.2

%

Output Accuracy, ULPM

VACC_ULPM

VOUT Rising, when LX stops switching

(4)

+1.5

+2.7

+4.6

%

DC Load Regulation

ACCLOAD

Load from 20mA to IOUT at 80% of

Peak Inductor Current

-1.2

%

DC Line Regulation

ACCLINE

Duty Cycle varied from 25% to

Maximum

-1.2

%

Input Shutdown Current

ISD_IN

VEN = 0V, VOUT = 0V, TJ = +25°C

1

120

nA

Quiescent Supply

Current Into IN

IQ_IN

VEN = VIN, not switching, VOUT = 105%

of target voltage, TJ = +25°C, RSEL =

Open

15

nA

Quiescent Supply

Current Into OUT

IQ_OUT

VEN = VIN, not switching, VOUT = 105%

of target voltage, TJ = +25°C, RSEL =

Open

500

800

nA

Maximum LX On-Time

tONMAX

TJ = -40°C to +125°C

1.0

1.75

2.2

μs

LX On-Time in CCM

tON_1.2V

VIN = 1.2V

TJ= +25°C

580

620

660

ns

TJ = -40°C to

+125°C

500

620

740

tON_3.0V

VIN = 3.0V

TJ = +25°C

240

300

360

LX Maximum Duty Cycle

DC

RSEL = 10kΩ, VIN = 1.2V, TJ = +25°C (5)

80

86

%

RSEL = 10kΩ, VIN = 1.2V (5)

74

86

RSEL = 191kΩ, VIN = 3.0V (5)

65

75

LX Leakage Current

ILEAK_LX

VLX = VIN = 5.5V,

VOUT = VEN = 0V

TJ = +25°C

1

100

nA

IN Current Limit

IIN_PT

VIN = VEN = 3.3V, VOUT = 2.3V

1.1

A

IPEAK_LX

VOUT = 3.3V, (6)

TJ = +25°C

1.9

2.0

2.1

A