MCP19124 datasheet(23/236 Pages) MICROCHIP

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 2016 Microchip Technology Inc.

DS20005619A-page 23

MCP19124/5

Maximum Available

External VDD Output

Current during SLEEP

IDD_OUT_SLEEP

——

VIN = 6.0V to 42V

VDD = VDD_SLEEP

Line Regulation

VDD_OUT/

(VDD_OUT x VIN)

-0.1

0.002

0.1

%/V

(VDD +1.0V)  VIN  20V

(Note 2)

Load Regulation

VDD_OUT/

VDD_OUT

-1

0.1

%IDD_OUT = 1 mA to 20 mA

(Note 2)

Output Short-Circuit

Current

IDD_SC

—50

—

VIN =(VDD +1.0V)

(Note 2)

Dropout Voltage

VIN -VDD

—0.3

0.5

VIDD_OUT =20mA

(Notes 2 and 3)

Power Supply

Rejection Ratio

PSRRLDO

—60

—

 1000 Hz

IDD_OUT =25mA

CIN =0µF, CDD =1 µF

Linear Regulator AVDD

Internal Analog

Supply Voltage

AVDD

—

4.096

—

AVDD Tolerance

AVDD_TOL

-2.5

±0.1

2.5

Trimmed

Band Gap Voltage

—

1.23

—

Trimmed at 1.0% tolerance

Band Gap

Tolerance

BGTOL

-2.5

—

+2.5

Input UVLO Voltage

UVLO Range

UVLOON

4.0

—

VVIN Falling

UVLOON Trip

Tolerance

UVLOTOL

-14

—

%VIN Falling

UVLO trip set to 9V

VINUVLO = 0x21h

UVLO Hysteresis

UVLOHYS

Hysteresis is based upon

the UVLOON setting

UVLO trip set to 9V

VINUVLO = 0x21h

Resolution

nbits

—

bits

Logarithmic Steps

UVLO Comparator

Input-to-Output Delay

—

µs

100 ns rise time to 1V

overdrive on VIN

VIN > UVLO to flag set

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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