Specifications with standard typeface are for T

Operating Junction Temperature range. VDD = V5 = 5V, V

Ω un-

less otherwise stated (Note 4). Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.

Symbol

Parameter

Conditions

Min

Typical

(Note

5)

Max

Units

V

FPWM_HI

Minimum FPWM Input

Logic High

2

V

V

FPWM_LO

Maximum FPWM Input

Logic Low

0.8

V

Power Good and OVP

V

PGOOD_HI

Power Good Upper

Threshold as a Percentage

of Internal Reference

FB voltage rising above V

FB

110

113

116

%

V

PGOOD_LOW

Power Good Lower

Threshold as a Percentage

of Internal Reference

FB voltage falling below V

FB

84

87

90

%

HYS

PGOOD

Power Good Hysteresis

7

%

∆t

PG_OK

Power Good Delay

From both output voltages “good”

to PGOOD assertion.

10

20

30

µs

∆t

PG_NOK

From the first output voltage

“bad” to PGOOD de-assertion

4

7

10

∆t

SD

From Enable low to PGOOD low

0.03

0.1

V

PGOOD_SAT

PGOOD Saturation Voltage

PGOOD de-asserted (Power Not

Good) and sinking 1.5mA

0.12

0.4

V

I

PGOOD_LEAK

PGOOD Leakage Current

PGOOD = 5V and asserted

0

1

µA

Soft-start

I

SS_CHG

Soft-start Charging Current

V

8

11

14

µA

R

SS_DCHG

Soft-shutdown Resistance

(SS pin to SGND, either

channel)

V

1800

Ω

I

SS_DCHG

Soft-start Discharge

Current

In Current Limit

80

115

160

µA

V

SS_RESET

Soft-start pin reset voltage

(Note 6)

SS charged to 0.5V, EN low to

high

100

mV

V

OS

SS to COMP Offset

Voltage

V

=0V

600

mV

Error Amplifier

GAIN

DC Gain

70

dB

V

SLEW

Voltage Slew Rate

COMP rising

4.45

V/µs

COMP falling

2.25

BW

Unity Gain Bandwidth

6.5

MHz

I

COMP_SOURCE

COMP Source Current

V

2

5mA

I

COMP_SINK

COMP Sink Current

V

reference

COMP = 5V

7

14

mA

Current Limit and Zero-Cross

I

ILIM

ILIM Pin Current (sourcing,

either ILIM pin)

V

46

62

76

µA

V

ILIM_TH

ILIM Threshold Voltage

-10

0

10

mV

V

SW_ZERO

Zero-cross Threshold (SW

Pin)

LDRV goes low

-2.2

mV

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