MCP19124 datasheet(27/236 Pages) MICROCHIP

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 2016 Microchip Technology Inc.

DS20005619A-page 27

MCP19124/5

Maximum Primary

Current Sense

Signal Voltage

VIP_MAX

—BG

1.5

Note 4

PWM Comparator

Input-to-Output Delay

—

Note 4

Peak Current Leading Edge Blanking

Resolution

LEB

—

bits

Blanking Time

Adjustable Range

LEBRANGE

—

256

4-Step Programmable

Range

(0, 50,100, and 200 ns)

(Note 4)

Offset Adjustment (IP Sense)

Resolution

OSADJ

—4

—

bits

Offset Adjustment

Range

OSADJ_RANGE

0—

750

Note 4

Offset Adjustment

Step Size

OSADJ_STEP

—

Linear Steps

Adjustable Slope Compensation

Resolution

SCRES

—

bits

Log Steps

Slope

—

437

mV/µs

Slope Step Size

SCSTEP

—

Log Steps

Ramp Set Point

Tolerance

mTOL

—±1

±32

Desaturation Detection Comparator

Input Offset Voltage

VOS

—

±1

—

Trimmed, 5 bits adjustable

Input Bias Current

IBIAS

—

±1

—

µA

Internal Circuit Dependent

Common-Mode Input

Voltage Range

VCMR

GND – 0.3V

—

2.7

Note 4

Input-to-Output Delay

—

VDR UVLO

VDR Input Resistance

VDR_RIN

—

230

—



VDR UVLO

(2.7V VDR Falling)

VDR_UVLO_2.7_F

2.45

—

2.9

VDR UVLO

(2.7 VDR Rising)

VDR_UVLO_2.7_R

2.68

—

3.23

VDR UVLO

(2.7V Hysteresis)

VDR_UVLO 2.7 HYS

185

—

425

4.2

Electrical Characteristics (Continued)

Electrical Specifications: Unless otherwise noted, VIN =12V, FSW = 150 kHz, TA =+25°C. Boldface specifications

apply over the TA range of -40°C to +125°C.

Parameters

Sym.

Min.

Typ.

Max.

Units

Conditions

Note 1:

Refer to Section 14.0 “Power-Down Mode (Sleep)”.

2: VDD is the voltage present at the VDD pin.

3: Dropout voltage is defined as the input-to-output voltage differential at which the output voltage drops 2%

below its nominal value measured at a 1V differential between VIN and VDD.

4: Ensured by design, not production tested.

5: These parameters are characterized, but not production tested.

6: The VDD LDO will limit the total source current to a maximum of 35 mA. Individually each pin can source a

maximum of 15 mA.

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