STOD2540 datasheet(6/19 Pages) STMICROELECTRONICS

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Electrical characteristics

STOD2540

6/19

Electrical characteristics

Table 4.

Electrical characteristics

(TJ = 40°C to 85°C, VI = 3.6V, VEN = 3V, CI = CO = 4.7µF, L = 4.7µH, R1 = 180kΩ, R2 = 10kΩ,

VO = 24V, Typ. values @ 25°C, unless otherwise specified).

Symbol

Parameter

Test

Min.

Typ.

Max.

Unit

Input voltage range

3.0

5.5

Regulated output voltage

VI = 3V to 5.5V

VI + 0.5

VOVP

Over voltage protection on

output

Continuous output current

VO = 25V

140

ISD

Stand-by current

VEN = Low, VI = 3.6V

µA

VEN = Low, VI = 3V to 4.2V

Quiescent current consumption

VI = 3V to 4.2V @ 25°C

0.4

0.8

VI = 5.5V @ 25°C

0.8

1.2

RDSON-SW

Boost switch RDSON Note: 1

VI = 4.2V, ISW = 100mA

0.4

Ω

BVDS Breakdown voltage

RDSON-LDS

RDSON Note: 1

VO = 25V, IO = 30mA

Ω

BVDS Breakdown voltage

ILIM-ADJ

Peak inductor limit range

Note: 1

RSET = 10kΩ to 100kΩ

0.2

1.1

ILIM-MAX

Maximum peak inductor current

Note: 1

VI = 3V to 5.5V, RSET = VI

0.75

1.2

Feedback voltage

5% @ 25°C

1.18

1.24

1.30

TON_MAX

Maximum ON Time

VI = 4.2V

5.5

µs

TOFF_MIN

Minimum OFF Time

VI = 4.2V

300

Eff

Efficiency, VI = 3.6V Note: 1

IO = 1 mA to 5mA

IO = 5 mA to 40mA

Efficiency, VI =4.2V Note: 1

IO = 1 mA to 5mA

IO = 5 mA to 40mA

Ripple

Output ripple and noise

VI = 3.6V, IO = 5 mA, VO = 24V

1.3

VI = 3.6V, IO = 30 mA, VO = 24V

1.3

VI = 4.2V, IO = 5 mA, VO = 24V

1.3

VI = 4.2V, IO = 30 mA, VO = 24V

1.3

OVHYST

Overvoltage hysteresis

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