PM6680 datasheet(13/49 Pages) STMICROELECTRONICS

Il numero della parte	PM6680

Spiegazioni elettronici	No Rsense dual step-down controller with adjustable voltages for notebook system power

PDF	49 Pages

Scroll/Zoom	100%

Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

Homepage	http://www.st.com

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13 / 49 page

PM6680

Electrical characteristics

13/49

Symbol

Parameter

Test condition

Min

Typ

Max

Unit

On time pulse width

Ton

On time duration

FSEL to

GND

OUT1=1.5 V

550

650

750

OUT2=1.05 V

230

270

315

FSEL to

VREF

OUT1=1.5 V

375

445

515

OUT2=1.05 V

175

210

245

FSEL to

LDO5

OUT1=1.5 V

285

340

395

OUT2=1.05 V

125

150

175

OFF time

TOFFMIN

Minimum off time

350

500

Voltage reference

VREF

Voltage accuracy

4 V < VLDO5 < 5.5 V

1.224

1.236

1.249

Load regulation

-100 µA< IREF < 100 µA

-4

Undervoltage lockout fault

threshold

Falling edge of REF

0.95

Integrator

Voltage accuracy

-909

900

909

Input bias current

0.1

µA

COMP

Over voltage clamp

Normal mode

250

Pulse skip mode

Under voltage clamp

-150

Line regulation

Both SMPS, 6 V<Vin<28 V(2)

0.004

%/V

LDO5 linear regulator

VLDO5

LDO5 linear output voltage

6 V<VIN<28 V ,

0 < ILDO5 < 50 mA

4.9

5.0

5.1

LDO5 line regulation

6 V< VIN < 28 V,

ILDO5 = 20 mA ,

0.004

%/V

ILDO5

LDO5 Current limit

VLDO5 > UVLO

270

330

400

ULVO

Under Voltage Lockout of LDO5

3.94

4.13

Table 5.

Electrical characteristics (continued)

VIN = 12 V, TA = 0 °C to 85 °C, unless otherwise specified

(1)

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