PM6680A Просмотр технического описания (PDF) - STMicroelectronics

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производитель

PM6680A

Dual synchronous step-down controller with adjustable output voltages plus LDO

STMicroelectronics 

Electrical characteristics

PM6680A

Table 5.

Symbol

Electrical characteristics (continued)

(TA = -40 °C to 125 °C, unless otherwise specified. All parameters at operating temperature

extremes are guaranteed by design and statistical analysis (not production tested).

Parameter

Test condition

Min

Typ

Max Unit

Minimum on time

On time pulse width@Vin = 24 V

FSEL to GND

FSEL to VREF

FSEL to LDO5

OUT1=3.3 V

OUT2=1.8 V

OUT1=3.3 V

OUT2=1.8 V

OUT1=3.3 V

OUT2=1.8 V

Minimum off time

TOFFMIN @ Vin = 24 V

Voltage reference

VREF

Voltage accuracy

4V < VLDO5 < 5.5 V

Load regulation

-100 µA < IREF < 100 µA

Undervoltage lockout fault

threshold

Falling edge of REF

PWM comparator

FB

Voltage accuracy

FB

Input bias current

COMP Over voltage clamp

COMP Under voltage clamp

Normal mode

Pulse skip mode

Line regulation

LDO5 linear regulation

Both SMPS, 6V < VIN < 36V (2)

VLDO5

ILDO5

ULVO

LDO5 linear output voltage

6 V < VIN < 36 V,

0 < ILDO5 < 50 mA

LDO5 line regulation

6 V < VIN < 36 V,

ILDO5 = 20 mA ,

LDO5 current limit

VLDO5 > UVLO

Under voltage lockout of

LDO5

595

190

400

145

300

105

1.224

-4

-909

4.9

270

3.94

700

225

470

170

355

125

350

1.236

900

0.1

250

60

-150

5.0

330

4

805

260

545

ns

200

410

145

500

ns

1.249 V

4

mV

0.95 mV

909 mV

µA

mV

1

%

5.1

V

0.004 %/V

400 mA

4.13

V

2. By demoboard test

10/48

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