STOD1812 datasheet(6/19 Pages) STMICROELECTRONICS

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Electrical characteristics

STOD1812

6/19

Electrical characteristics

Table 6.

Electrical characteristics

(TJ = -40 °C to 125 °C, VI = 3.6 V, CI = CO = 4.7 µF, L = 2.2 µH, IO = 80 mA, VEN = VI,

VO = 18 V, R1=270 kΩ, R2 = 20 kΩ unless otherwise specified).

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

Supply section

Supply input voltage

IO=0 to 120mA

2.5

5.5

Load current

VI=2.5V to 5.5V

120

UVLO_H

Under voltage lockout

HIGH

2.3

2.4

UVLO_L

Under voltage lockout

LOW

2.1

2.2

Quiescent current

IO=120mA

1.3

No Load, Switching

0.3

VFB=VI - No Load, No Switching

µA

VEN =GND

100

300

VEN H

Enable high threshold

VI=2.5V to 5.5V

1.2

VEN L

Enable low threshold

VI=2.5V to 5.5V

0.4

IEN

Enable input current

VEN=Vi

500

Dynamic performance

TON MAX

TON max time

0.5

µs

TSS

Soft-start time

From enable to output regulation

0.6

DMAX

Maximum duty cycle

Efficiency

IO=5 to 30mA

IO=30 to 120mA

Step-up converter section

VFB1

Feedback voltage

VI=2.5V to 5.5V

1.18

1.21

1.24

IFB

Feedback leakage

current

VI=2.5V to 5.5V

100

VO_MAX

Output voltage range

VI=2.5V to 5.5V; IO=0 to 120mA

ΔV

O_SLI

Static line regulation

VI=2.5V to 5.5V, IO1=120mA,

0.6

%/V

ΔV

O_SLO

Static load regulation

IO=0 to 120mA, VI=3.6V;

0.0016

%/mA

ΔV

O_LIT

Line transient

regulation

VI=2.5V to 3.0V, IO1=120mA,

TR=TF=50µs TA=25°C

ΔV

O_LOT

Load transient

regulation

IO=5 to 120mA and IO=120 to 5mA,

TR=TF=10µs TA=25°C, peak to peak

250

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