5

LM3241

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SNOSB38C – JANUARY 2009 – REVISED NOVEMBER 2017

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Copyright © 2009–2017, Texas Instruments Incorporated

(1)

Shutdown current includes leakage current of PFET.

(2)

IQ specified here is when the part is not switching under test mode conditions. For operating quiescent current at no load, see the curves

in the Typical Characteristics section.

(3)

Current limit is built-in, fixed, and not adjustable.

6.5 Electrical Characteristics

All voltages are with respect to the potential at the GND pins. Minimum (MIN) and maximum (MAX) limits are specified by

design, test, or statistical analysis. For performance over the input voltage range and closed-loop results, see the curves in

the Typical Characteristics section.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VFB,MIN

Feedback voltage at

minimum setting

PWM mode, VCON = 0.24 V

0.6

V

PWM mode, open loop conditions at VIN = 3.6 V,

VCON = 0.24 V

0.58

0.62

VFB,MAX

Feedback voltage at

maximum setting

PWM mode, VCON = 1.36 V, VIN = 3.9 V

3.4

V

PWM mode, open loop conditions at VIN = 3.6 V,

VCON = 1.36 V, VIN = 3.9 V

3.332

3.468

ISHDN

Shutdown supply current

EN = SW = VCON = 0 V(1)

0.1

µA

open loop conditions at VIN = 3.6 V,

EN = SW = VCON = 0 V (1)

2

IQ_PWM

PWM mode quiescent current

PWM mode, No switching(2), VCON = 0 V,

FB = 1 V

620

µA

PWM mode, open loop conditions at VIN = 3.6 V,

No switching(2), VCON = 0 V, FB = 1 V

750

IQ_ECO

Eco-mode quiescent current

Eco-mode, No switching(2),

VCON = 0.8 V, FB = 2.05 V

45

µA

Eco-mode, open loop conditions at VIN = 3.6 V,

No switching(2), VCON = 0.8 V, FB = 2.05 V

60

RDSON (P)

Pin-pin resistance for PFET

VIN = VGS = 3.6 V, ISW = 200 mA

160

mΩ

Open loop conditions at VIN = 3.6 V,

VIN = VGS = 3.6 V, ISW = 200 mA

250

RDSON (N)

Pin-pin resistance for NFET

VIN = VGS = 3.6 V, ISW = −200 mA

110

mΩ

Open loop conditions at VIN = 3.6 V,

VIN = VGS = 3.6 V, ISW = −200 mA

200

ILIM

PFET switch peak current

limit(3)

1450

mA

Open loop conditions at VIN = 3.6 V

1300

1600

FOSC

Internal oscillator frequency

6

MHz

Open loop conditions at VIN = 3.6 V

5.7

6.3

VIH

EN Logic high input threshold Open loop conditions at VIN = 3.6 V

1.2

V

VIL

EN Logic low input threshold

Open loop conditions at VIN = 3.6 V

0.4

V

Gain

VCON to VOUT gain

0.24 V

≤ VCON ≤ 1.36 V

2.5

V/V

ICON

VCON pin leakage current

Open-loop mode, VCON = 1 V

±1

µA