MCP8026 datasheet(10/64 Pages) MICROCHIP

10 / 64 page

MCP8025/6

DS20005339B-page 10

 2016 Microchip Technology Inc.

Line Regulation

VOUT/

(VOUT x VDD)

—

0.1

0.5

%/V

6V < VDD <19V

IOUT =20mA

Load Regulation

VOUT/VOUT|—

0.2

0.5

IOUT = 0.1 mA to 15 mA

Dropout Voltage

VDD –VOUT5

—

180

350

IOUT =20mA

measurement taken when

output voltage drops 2% from

no-load value

Power Supply Rejection Ratio

PSRR

—

f = 1 kHz

IOUT =10mA

Buck Regulator

Feedback Voltage

VFB

1.19

1.25

1.31

Feedback Voltage Tolerance

TOLVFB

——

5.0

IFB =1 µA

Feedback Voltage Line

Regulation

VFB/VFB)/

VDD|

—

0.1

0.5

%/V

VDD = 6V to 28V

Feedback Voltage Load

Regulation

VFB/VFB|—

0.1

0.5

IOUT = 5 mA to 150 mA

Feedback Input Bias Current

IFB

-100

—

+100

Sink/Source

Feedback Voltage

To Shutdown Buck Regulator

VBUCK_DIS

2.5

—

5.5

VDD >6V

Switching Frequency

fSW

—

461

—

kHz

Duty Cycle Range

DCMAX

3—

PMOS Switch On Resistance

RDSON

—0.6

—



TJ = 25°C

PMOS Switch Current Limit

IP(MAX)

—2.5

—

Ground Current –

PWM Mode

IGND

—

1.5

2.5

Switching

Quiescent Current –

PFM Mode

—

150

200

µA

IOUT =0 mA

Output Voltage Adjust Range

VOUT

2.0

—

5.0

Output Current

IOUT

150

—

5V, VDD – VOUT >0.5V

250

—

3V, VDD – VOUT > 0.5V

Output Power

POUT

—

750

—

P = IOUT xVOUT

2.5A peak current

Voltage Supervisor

Buck Input Undervoltage Lock-

out – Start-Up

UVLOBK_STRT

—4.3

4.5

VDD rising

Buck Input Undervoltage Lock-

out – Shutdown

UVLOBK_STOP

3.8

4.0

—

VDD falling

Buck Input Undervoltage

Lockout Hysteresis

UVLOBK_HYS

—0.3

—

5V LDO Undervoltage Fault

Inactive

UVLO5VLDO_INACT

—4.5

—

VOUT5 rising

5V LDO Undervoltage Fault

Active

UVLO5VLDO_ACT

—4.0

—

VOUT5 falling

AC/DC CHARACTERISTICS (CONTINUED)

Electrical Specifications:

Unless otherwise noted, TJ = -40°C to +150°C, typical values are for +25°C, VDD = 13V.

Parameters

Symbol

Min.

Typ.

Max.

Units

Conditions

Note 1:

1000 hour cumulative maximum for ROM data retention (typical).

Limits are by design, not production tested.

MCP8026 Datasheet(PDF) 10 Page - Microchip Technology

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