LM4510

SNVS533C – SEPTEMBER 2007 – REVISED MAY 2013

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Electrical Characteristics

(1) (2)

range (

Parameter

Test Conditions

Units

FB Pin Voltage

2.7V

≤ VIN ≤ 5.5V

1.24

1.265

1.29

V

0.050

1.5

µA

0.45

1.1

Ω

0.9

1.1

NMOS Switch Current Limit

1.0

1.2

1.8

A

Device Switching

EN = 3.6V, FB = COMP

1.7

2.5

mA

Non-switching Current

EN = 3.6V, FB > 1.29V

0.8

2.0

mA

Shutdown Current

EN = 0V

0.002

0.050

µA

SW = 20V

0.01

0.150

µA

VOUT = 20V

50

90

150

µA

PMOS Switch Leakage

SW = 0V, VOUT = 20V

0.001

0.100

µA

Current

Switching Frequency

0.85

1.0

1.2

MHz

Maximum Duty Cycle

FB = 0V

88

94

%

Minimum Duty Cycle

15

20

%

Error Amplifier

Gm

70

130

200

µmho

Transconductance

Device Enable

HIGH

1.2

0.81

EN

V

Threshold

Device Shutdown

LOW

0.78

0.4

EN Pin Bias Current

0 < EN < 3.6V

3.2

8.0

µA

ON Threshold

18.0

19.7

20.7

V

FB Fault

Feedback Fault Protection

Protection

OFF Threshold

17.0

18.7

20.0

ON Threshold

2.5

2.65

UVLO

Input Undervoltage Lockout

V

OFF Threshold

2.1

2.35

9

11.3

15

µA

(1)

All limits specified at room temperature (standard typeface) and at temperature extremes (bold typeface). All room temperature limits are

production tested, specified through statistical analysis or by design. All limits at temperature extremes are specified via correlation

using standard Statistical Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).

(2)

Typical numbers are at 25°C and represent the most likely norm.

(3)

Current flows into the pin.

(4)

Current flows out of the pin.

4

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