–2–

REV. 0

REF Load = 0 mA, MODE = 0 V, SYNC = 0 V, SD = 5 V, unless otherwise noted.)

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

INTERNAL 5 V REGULATOR

INTVCC

Input Voltage Range

5.5

25

V

5 V Voltage

°C

4.95

5.025

5.15

V

Line Regulation

5.5 V

≤ VIN ≤ 25 V

0.3

mV/V

Total Variation

Line, Temp

4.8

5.2

V

Switchover Voltage

AUXVCC from Low to High

4.65

4.75

4.85

V

Switchover Hysteresis

AUXVCC from High to Low

100

mV

Undervoltage Lockout

INTVCC Falling

3.6

3.8

4.2

V

Threshold Voltage

Undervoltage Lockout

120

mV

Hysteresis

REFERENCE

Output Voltage

2

REF

5.5 V

≤ VIN ≤ 25 V

1.185

1.197

1.209

V

SUPPLY CURRENT

Shutdown Current

SD = 0 V

7

15

µA

Standby Current

SS3 = SS5 = SD2 = 0 V

250

400

µA

SD = 5 V

Quiescent Current

No Loads, MODE = 5 V

0.95

1.8

mA

(PWM Mode)

SS3 = SS5 = SD2 =5 V

FB5 = FB3 = FB2 = 1.25 V,

ADJ/FX5 = ADJ/FX3 = 5 V

Quiescent Current

No Loads, MODE = 0 V

650

µA

(Power-Saving Mode)

SS3 = SS5 = SD2 = 5 V

FB5 = FB3 = FB2 = 1.25 V,

ADJ/FX5 = ADJ/FX3 = 5 V

OSCILLATOR

Frequency

SYNC = AGND

176

200

224

kHz

SYNC = REF

264

300

336

kHz

SYNC = INTVCC

352

400

448

kHz

SYNC Input

Frequency Range

230

600

kHz

Input Low Voltage

3

≤ 200 ns

0.4

V

Input High Voltage

3

≤ 200 ns

4.6

V

Input Current

SYNC = REF

1.2

µA

POWER GOOD

PWRGD

Output Voltage In Regulation

10 k

Ω Pull-Up to 5 V

4.8

V

Output Voltage Out of Regulation

10 k

Ω Pull-Up to 5 V

0.4

V

FB5 < 90% of Nominal

Output Value

PWRGD Trip Threshold

FB5 Rising

–8

–4

–2

%

PWRGD Hysteresis

FB5 Falling

4

%

CPOR Pull-Up Current

CPOR = 1.2 V

2.5

µA

ERROR AMPLIFIER

DC Gain

67

dB

Gain-Bandwidth Product

GBW

10

MHz

Input Leakage Current

ADJ/FX5 = ADJ/FX3 = 5 V

200

nA

MAIN SMPS CONTROLLERS

Fixed 5 V Output Voltage

FB5

PWM Mode

5.5 V

≤ VIN ≤ 25 V, ADJ/FX5 = 0 V

4.90

5.0

5.10

V

Power-Saving Mode

5.5 V

≤ VIN ≤ 25 V, ADJ/FX5 = 0 V

4.925

5.025

5.125

V

Fixed 3.3 V Output Voltage

FB3

PWM Mode

5.5 V

≤ VIN ≤ 25 V, ADJ/FX3 = 0 V

3.234

3.3

3.366

V

Power-Saving Mode

5.5 V

≤ VIN ≤ 25 V, ADJ/FX3 = 0 V

3.250

3.316

3.382

V