STOD03ASTPUR datasheet(8/25 Pages) STMICROELECTRONICS

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Electrical characteristics

STOD03AS

8/25

DocID022614 Rev 2

Electrical characteristics

TJ = 25 °C, VINA = VINP = 3.7 V, IMID,O2 = 30 mA, CIN = 2 x 10 µF, CMID = 10 µF,

CO2 = 2 x 10 µF, CREF = 1 µF, L1 = L2 = 4.7 µH, VEN = 2 V, VMID = 4.6 V, VO2= -4.9 V unless

otherwise specified.

Table 6. Electrical characteristics

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

General section

VINA, VINP

Supply input voltage

2.3

3.7

4.5

UVLO_H

Undervoltage lockout HIGH

VINA rising

2.22

2.25

UVLO_L

Undervoltage lockout LOW

VINA falling

1.9

2.18

I_VI

Input current

No load condition

1.3

1.7

IQ_SH

Shutdown current

VEN=GND

TJ=-40°C to +85°C

1µA

VEN H

Enable high threshold

VINA=2.5V to 4.5V,

TJ=-40°C to +85°C

1.2

VEN L

Enable low threshold

0.4

IEN

Enable input current

VEN=VINA=4.5V

TJ=-40°C to +85°C

1µA

Switching frequency

PWM mode

1.2

1.5

1.7

MHz

D1MAX

Step-up maximum duty cycle

No load

D2MAX

Inverting maximum duty cycle No load

Total system efficiency

IMID,O2=10 to 30mA,

VMID=4.6V, VO2=-4.9V

IMID,O2=30 to 150mA,

VMID=4.6V, VO2=-4.9V

VREF

Voltage reference

IREF=10µA

1.208

1.22

1.232

IREF

Voltage reference current

capability

At 98.5% of no load

reference voltage

100

µA

Step-up converter section

VMID

Positive voltage total variation

VINA=VINP=2.5V to 4.5V;

IMID=5mA to 150mA, IO2 no

load, TJ=-40°C to +85°C

4.55

4.6

4.65

Temperature accuracy

VINA=VINP=3.7V; IMID=5mA;

IO2 no load; TJ=-40°C to

+85°C

±0.5

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