LM7705 datasheet(3/22 Pages) TI

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LM7705

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SNVS420B – NOVEMBER 2008 – REVISED MARCH 2013

3.3V Electrical Characteristics (continued)

Unless otherwise specified, all limits are ensured for TA = 25°C, VDD = 3.3V, VSS = 0V, SD = 0V, CFLY= 5 µF, CRES = 22 µF,

COUT = 22 µF. Boldface limits apply at temperature extremes

(1).

Symbol

Parameter

Conditions

Min(2)

Typical(3)

Max(2)

Units

VIL

Shutdown Input Low

1.6

1.25

VIH

Shutdown Input High

1.85

2.15

Shutdown Pin Input Current

SD = VDD

Load Regulation

0 mA

≤ IOUT ≤ −20 mA

0.12

0.6

%/mA

0.85

Line Regulation

≤ VDD ≤ 5.25V (No Load)

-0.2

0.29

0.7

%/V

1.1

5.0V Electrical Characteristics

Unless otherwise specified, all limits are ensured for TA = 25°C, VDD = 5.0V, VSS = 0V, SD = 0V, CFLY = 5 µF, CRES = 22 µF,

COUT = 22 µF. Boldface limits apply at temperature extremes

(1).

Symbol

Parameter

Conditions

Min(2)

Typical(3)

Max(2)

Units

VOUT

Output Voltage

IOUT = 0 mA

−0.242

−0.233

−0.219

−0.251

−0.209

IOUT = −20 mA

−0.242

−0.226

−0.219

−0.251

−0.209

Output Voltage Ripple

IOUT = −20 mA

mVPP

Supply Current

No Load

103

135

μA

240

ISD

Shutdown Supply Current

SD = VDD

ηPOWER

Current Conversion Efficiency

−5 mA ≤ IOUT ≤ −20 mA

ηPOWER

Current Conversion Efficiency

IOUT = −5 mA

tON

Turn On Time

IOUT = −5 mA

200

μs

t OFF

Turn Off Time

IOUT = −5 mA

700

μs

tOFF CP

Turn Off Time Charge Pump

IOUT = −5 mA

μs

ZOUT

Output Impedance

−1 mA ≤ IOUT ≤ −20 mA

0.26

0.8

1.3

IO_MAX

Maximum Output Current

VOUT < − 200 mV

−35

fOSC

Oscillator Frequency

kHz

VIL

Shutdown Input Low

2.55

1.95

VIH

Shutdown Input High

2.8

3.25

Shutdown Pin Input Current

SD = VDD

Load Regulation

0 mA

≤ IOUT ≤ −20 mA

0.14

0.6

%/mA

0.85

Line Regulation

≤ VDD ≤ 5.25V (No Load)

−0.2

0.29

0.7

%/V

1.1

(1)

Boldface limits apply to temperature range of

−40°C to 125°C

(2)

All limits are specified by testing or statistical analysis.

(3)

Typical values represent the most likely parametric norm as determined at the time of characterization. Actual typical values may vary

over time and will also depend on the application and configuration. The typical values are not tested and are not specified on shipped

production material.

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