STBB2JAD-R datasheet(8/25 Pages) STMICROELECTRONICS

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Electrical characteristics

STBB2

8/25

DocID022745 Rev 9

Electrical characteristics

- 40 °C < TA < 85 °C, VIN = 3.6 V; VOUT = 3.4 V, VEN = VIN, VBP = 0 V; typical values are at

TA = 25 °C, unless otherwise specified.

Table 6. Electrical characteristics

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

General section

VIN

Operating power input voltage

range

2.4

5.5

Shutdown mode

VEN = 0 V

0.5

µA

Pulse-skipping

IOUT = 0 A, VMODE = 0

µA

PWM mode

IOUT = 0 A, VMODE = VIN

810

Bypass mode

VBP = VIN; IOUT = 0 A;

VMODE = 0, VIN = 2.4 to 5.5 V

510

µA

VUVLO

Undervoltage lockout threshold

VIN rising; VMODE = VIN;

IOUT = 100 mA

2.1

2.35

VIN falling; VMODE = VIN;

IOUT = 100 mA

1.8

2.1

fSW

Switching frequency

2.5

MHz

IOUT

Continuous output current (1)

2.5 V

≤ VIN ≤ 5.5 V

800

IPK

Switch current limitation

2.4

2.5

2.7

IPS-PWM

PS to PWM transition

300

PWM to PS transition

280

Efficiency

(VIN = 3.6 V; VOUT = 3.4 V)

IOUT =1 0 mA (PS mode)

IOUT = 50 mA (PS mode)

IOUT = 150 mA (PWM)

IOUT = 250 mA (PWM)

IOUT = 500 mA (PWM)

IOUT = 800 mA (PWM)

TON

Turn-on time (2)

VEN from low to high;

IOUT = 10 mA

260

300

µs

TSHDN

Thermal shutdown

150

°C

Hysteresis

°C

Output voltage

VOUT

Output voltage range

1.2

4.5

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