LM8801 datasheet(4/23 Pages) TI

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LM8801

SNVS597H – APRIL 2009 – REVISED MAY 2013

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Electrical Characteristics

(1) (2) (3)

Limits in standard typeface are for TA = 25°C. Limits in boldface type apply over the operating ambient temperature range

(

−30°C ≤ TA = TJ ≤ +85°C). Unless otherwise noted, specifications apply to the LM8801 open loop Typical Application Circuit

with VOUT = 1.82V, VIN = EN = 3.6V.

Parameter

Test Conditions

Min

Typ

Max

Units

VFB

Feedback Voltage Tolerance

PWM

-1.5

+1.5

2.3V

≤ VIN ≤ 5.5V;

0.2

IOUT = 10 mA (PFM)

Line Reg. (closed loop)

%/V

2.3V

≤ VIN ≤ 5.5V;

VOUT

0.048

IOUT = 200 mA (PWM)

0.1 mA

≤ IOUT ≤ 600 mA;

Load Reg. (closed loop)

0.0019

%/mA

VIN = 3.6V (Auto)

ISHDN

Shutdown Supply Current

EN = 0V, SW = GND

0.08

1.0

µA

IQ_PFM

Quiescent Current in PFM Mode

No load, device is not switching

µA

IQ_PWM

Quiescent Current in PWM Mode

No load, device is not switching

0.57

0.7

RDSON (P)

Pin-Pin Resistance for PFET

VIN = VGS = 3.6V

220

Ω

RDSON (N)

Pin-Pin Resistance for Sync NFET

VIN = VGS = 3.6V

180

Ω

ILIM

PFET Peak Current Limit

900

1100

1300

VIH

Logic High Input, all control pins

1.2

VIL

Logic Low Input

0.4

IEN,MODE

Pin Input Current

0.01

µA

FOSC

Internal Oscillator Frequency

PWM Mode

5.6

6.0

6.4

MHz

UVLO

Under-Voltage Lock Out

2.0

(1)

All voltages are with respect to the potential at the GND pin.

(2)

Min and Max limits are specified by design, test or statistical analysis. Typical numbers represent the most likely norm.

(3)

The parameters in the electrical characteristic table are tested under open loop conditions at VIN = 3.6V unless otherwise specified. For

performance over the input voltage range and closed loop condition, refer to the datasheet curves.

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