MCP16501 datasheet(8/42 Pages) MICROCHIP

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MCP16501

DS20006388E-page 8

 2020-2022 Microchip Technology Inc. and its subsidiaries

Maximum Duty Cycle

DMAX

100

—

Functionality test

Minimum ON Time

TON_MINx

—35

—

FPWM

High-Side Switch

On-Resistance

RDSonPx

—

140

160

mΩ

PVINx = VIN = 3.6V

Low-Side Switch

On-Resistance

RDSonNx

—

120

140

mΩ

PVINx = VIN = 3.6V

Soft Start Rate

SSR

—

3.125

—

V/ms —

High-Side Peak Current Limit

(Cycle-by-Cycle)

ILIM_HSx

1.2

1.8

2.4

—

Current Limit Frequency

Foldback VOUTx Threshold

VTH_FFBx

—500

—

Hiccup Mode Short-Circuit

Protection Wait Time

tHICCUP

—

3x Soft

Start

Time

—ms

—

Low-Side Negative Peak

Current Limit (FPWM)

ILIM_NEGx

-1.4

-1

-0.8

—

Zero Current Detection

Threshold

IZCDx

033

110

—

Active Discharge Resistance

RDISCH_OUTx

—25

—

Ω

DISCH enabled when regulator is

disabled

LDO

Input Operating Voltage Range

VLVIN

2.7

—

5.5

—

Output Voltage Range

VLOUT

0.9

—

3.7

Recommended application

settings

Stable Output Capacitor Range

(Note 2)

CLOUT

2.2

—

µF

ILOUT ≤ 150 mA – application

requirement

4.7

—

µF

ILOUT ≤ 300 mA – application

requirement

Operational Quiescent

Current

IVIN_Q

—110

—

µA

ILOUT= 0 mA; only LDO ON;

Bucks OFF

LDO Operation Quiescent

Current

IVIN_Q_LDO

—45

—

µA

ILOUT= 0 mA; all channels ON

including LDO, ΔVIN current when

turning on LDO

Feedback Voltage

VLFB

0.8865

0.9

0.9135

VIN = 3.6V

Dropout Voltage (Note 3)

VDO

—170

500

ILOUT =300 mA

Output Voltage Line

Regulation

LINE_REG

—

0.024

—

VIN = 3.6V to 5.5V,

ILOUT =0.1 mA

Output Voltage Load

Regulation

LOAD_REG

—

0.3

—

ILOUT = 0.1 mA to 300 mA

PSRR (Note 2)

PSRR

—63

—

f = 1 kHz, IOUT =20 mA,

VLOUT = 1.8V, VIN modulated

—46

—

f = 10 kHz, IOUT =20mA,

VLOUT = 1.8V, VIN modulated

Soft Start Rate

SSR_LFB

—

3.125

—

V/ms measured on LFB

AC/DC CHARACTERISTICS (CONTINUED)

Electrical Specifications: Unless otherwise specified: TA =TJ =+25°C; VIN = VIN =PVINx =5V; L1 =L2=L3 =2.2 µH;

COUT1, COUT2,, COUT3=22µF. Boldface type applies for junction temperatures TJ of -40°C to +125°C.

Parameters

Sym.

Min.

Typ.

Max.

Units

Conditions

Note 1:

Maximum limit for TJ = -40°C to +105°C based on characterization data.

Not production tested.

Typical value from bench characterization, maximum value production tested.

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