Unless otherwise specified, V

type apply over the full operating junction temperature range. Specifications appearing in plain type are measured using low

duty cycle pulse testing with T

Symbol

Parameter

Conditions

Min

Typ

Max

Units

I

SK_TD12-3

Delay Timer Sink

Current

V

192

274

356

µA

V

TD12-3

Delay Timer Threshold

Voltage

Rising

1.70

1.94

2.20

V

I

I

ss3_sc

Soft-Start Source

Current Ratio

-13%

1.0

+13%

A/A

I

I

sc_TD12-3

Soft-Start to Delay Timer

Source Current Ratio

-32%

0.209

+32%

A/A

Shutdown

V

Standby

Standby Threshold

(ON/UVLO pin)

Rising

Shutdown to Standby

0.95

1.2

1.44

V

Hysteresis

149

mV

V

ON

ON Threshold

(ON/UVLO pin)

Rising

Standby to On

1.75

1.98

2.20

V

Hysteresis

205

mV

S

W_ R1, 2

SW1, 2 ON Resistance

V

440

570

700

Ω

S

W_R3a, 3b

SW3a, 3b ON

Resistance

V

200

249

310

Ω

V

SW_dis

SW3a Quick Discharge

Threshold at FB3 (falling

edge)

LDRV3a = High

.81

V

Protection

I

current

FAULT_DELAY = 2.0V

3.54

4.7

5.9

µA

I

SK_FAULTDELAY

FAULT_DELAY sink

current

FAULT_DELAY = 0.4V

0.27

mA

V

FAULT_DELAY

FAULT_DELAY

threshold Voltage

Rising

1.75

1.96

2.20

V

V

UVP

FB1, 2, 3 Under Voltage

Protection Latch

Threshold

As a percentage of nominal output

voltage (falling edge)

75

80.6

86

%

Hysteresis

4%

V

OVP

FB1, 2, 3 Over-voltage

Shutdown Latch

Threshold

As a percentage of nominal output

voltage (rising edge)

106

112

119

%

V

UVLO_INT

VLIN5 Under Voltage

Lockout Threshold

Rising

4.2

V

Hysteresis

8%

V

PROT-IN1

Analog protection

threshold

1.19

1.239

1.4

V

V

PROT-IN2

Logic protection

threshold

0.8

1.48

2

V

I

sk_prot-in2

PROT-IN2 sink current

2

µA

Gate Drive

I

CBOOT

CBOOTx Leakage

Current

V

10

nA

I

SC_DRV

HDRVx and LDRVx

Source Current

HDRV = LDRV = 2.5V

0.5

A

I

sk_HDRV

HDRVx Sink Current

HDRVX = 2.5V

0.8

A

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