If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Supply Voltage (V+ to GND, or GND to OUT)

5.8V

SD

(GND − 0.3V) to (V+ +

0.3V)

V+ and OUT Continuous Output Current

50 mA

Output Short-Circuit Duration to GND (Note 2)

1 sec.

Continuous Power

Dissipation (T

600 mW

T

150˚C

θ

210˚C/W

Operating Junction

Temperature Range

−40˚ to 85˚C

Storage Temperature Range

−65˚C to +150˚C

Lead Temp. (Soldering, 10 seconds)

300˚C

ESD Rating

2kV

Electrical Characteristics

Limits in standard typeface are for T

less otherwise specified: V+ = 5V, C

Symbol

Parameter

Condition

Min

Typ

Max

Units

V+

Supply Voltage

1.8

5.5

V

I

Q

Supply Current

No Load

220

500

µA

I

SD

Shutdown Supply Current

1

µA

V

SD

Shutdown Pin Input Voltage

Normal Operation

2.0

(Note 5)

V

Shutdown Mode

0.8

(Note 6)

I

L

Output Current

40

mA

R

SW

Sum of the R

internal MOSFET switches

I

4

8

Ω

R

OUT

Output Resistance (Note 7)

I

12

25

Ω

f

OSC

Oscillator Frequency

(Note 8)

80

160

kHz

f

SW

Switching Frequency

(Note 8)

40

80

kHz

P

EFF

Power Efficiency

R

OUT

90

94

%

I

91

V

OEFF

Voltage Conversion Efficiency

No Load

99

99.96

%

Note 1: Absolute maximum ratings indicate limits beyond which damage to the device may occur. Electrical specifications do not apply when operating the device

beyond its rated operating conditions.

Note 2: OUT may be shorted to GND for one second without damage. However, shorting OUT to V+ may damage the device and should be avoided. Also, for tem-

peratures above 85˚C, OUT must not be shorted to GND or V+, or device may be damaged.

ambient temperature, and

voltage and efficiency.

Note 5: The minimum input high for the shutdown pin equals 40% of V+.

Note 6: The maximum input low for the shutdown pin equals 20% of V+.

Note 7: Specified output resistance includes internal switch resistance and capacitor ESR. See the details in the application information for simple negative voltage

converter.

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