3

Rev.1.1

Vout=1.2V/1.8V

L=2.2µH

Cout=22µF

VIN

5

4

1

3

2

FB

SW

EN

GND

ELM60012LA

ELM60018LA

Vin

Cin=10µF

●

●

Enable

* Passive components without specified values in the above figure are optional.

• Fixed output voltage

Parameter

Symbol

Test condition

Min.

Typ.

Max. Unit

Supply voltage

Vin

2.5

6.0

V

Output voltage

Vout

Adjustable

0.6

6.0

V

Feedback current

Ifb

-30.0

30.0

nA

Regulated feedback voltage

Vfb

-40°C ≤ Top ≤ +85°C

0.582 0.600 0.618

V

Reference voltage line regulation ∆Vfb/∆Vin Vin=2.5V to 6V

0.04

0.40

%/V

Output voltage line regulation

∆Vout/∆Vin Vin=2.5V to 6V

0.04

0.40

%/V

Output voltage load regulation

Vlr

0.5

%

Shutdown current

Is

Ven=0V, Vin=6V

0.01

1.00

µA

Quiescent current

Iq

Ven=Vin, Vfb=0.65V

No switching

200

µA

SW leakage current

Ileak

Ven=0V, Vfb=0.65V

Vsw=0V or 6V

-1

1

µA

PMOSFET on resistance

RdsonP Isw=100mA

0.35

Ω

NMOSFET on resistance

RdsonN Isw=-100mA

0.24

Ω

PMOSFET current limit

IPcl

Duty cycle=100%

Current pulse width<1ms

0.8

1.1

1.5

A

Oscillator frequency

Fosc

1.12

1.40

1.68 MHz

Thermal shutdown threshold

Tsd

145

°C

EN high level input voltage

Venh

-40°C ≤ Top ≤ +85°C

1.1

V

EN low level input voltage

Venl

-40°C ≤ Top ≤ +85°C

0.3

V

EN input current

Ien

Ven=0V to Vin

-1

1

µA

Vin=3.6V, Typical values are at Top=25°C, unless otherwise noted.

high efficiency synchronous PWM step down DC/DC converter

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