apply over the junction temperature (T

Maximum limits are guaranteed through test, design, or statistical correlation. Typical values represent the most likely

parametric norm at T

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

T

OFFMIN

Minimum Off-time

365

ns

T

ONMIN

Minimum On-time

155

ns

TH

SLEEP_HYS

Sleep mode threshold hysteresis

VFB rising, % of TH

WAKE

101.2

%

TH

WAKE

Wake up threshold

Measured at falling FB, COMP

= 0.6V

1.234

V

I

BOOT

BOOT pin leakage current

BOOT = 16V, SW = 10V

0.0006

5.0

µA

Protection

I

LIMPK

Peak Current Limit

1.85

2.5

3.10

A

V

FB_SC

Short circuit frequency foldback

threshold

Measured at FB falling

0.87

V

F_min_sc

Min Frequency in foldback

71

kHz

V

TH_PGOOD

Power Good Threshold

Measured at FB, PGOOD rising

89

92

95

%

PGOOD hysteresis

2

7

8

%

I

PGOOD_HI

PGOOD leakage current

PGOOD = 5V

0.2

nA

R

DS_PGOOD

PGOOD on resistance

PGOOD sink current = 500 µA

64

Ω

V

UVLO

Under-voltage Lock-Out Threshold

Vin falling , shutdown, VDD =

VIN

2.60

2.9

3.20

V

Vin rising, soft-start, VDD = VIN

3.60

3.9

4.20

TSD

Thermal Shutdown Threshold

160

˚C

θ

JA

Thermal resistance

Power dissipation = 1W, 0 lfpm

air flow

38

˚C/W

Logic

Vth

EN

Enable Threshold voltage

0.8

1.1

1.4

V

Enable hysteresis

164

mV

I

EN_Source

EN source current

EN = 0V

4.5

µA

V

TH_FPWM

FPWM threshold

0.8

1.2

1.6

V

I

FPWM

FPWM leakage current

FPWM = 5V

66

nA

EA

gm

Error amp trans-conductance

400

670

1000

µmho

I

COMP

COMP source current

VCOMP = 0.9V

56

µA

COMP sink current

VCOMP = 0.9V

39

µA

V

COMP

COMP pin voltage range

0.61

1.32

V

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is

intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics.

Note 3: The human body model is a 100 pF capacitor discharged through a 1.5 k

Ω resistor into each pin. The machine model is a 200pF capacitor discharged

directly into each pin. The charged device model is per JESD22-C101-C.

within specification. A minimum of 3.9V (typical) is also required for startup.

Note 5: All room temperature limits are 100% production tested. All limits at temperature extremes are guaranteed through correlation using standard Statistical

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

Note 6: Iq and ISD specify the current into the VIN pin. IBIAS is the current into the VBIAS pin when the VBIAS voltage is greater than 3V. All quiescent current

specifications apply to non-switching operation.

Note 7: The absolute maximum specification applies to DC voltage. An extended negative voltage limit of -2V applies for a pulse of up to 1µs, and -1V for a pulse

of up to 20µs.

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