MPQ9842

– 36V, 2A, LOW IQ, SYNCHRONOUS STEP-DOWN CONVERTER

MPQ9842 Rev. 1.1

www.MonolithicPower.com

4

7/29/2022

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2022 MPS. All Rights Reserved.

PACKAGE REFERENCE

TOP VIEW

1

2

3

PHASE

VIN

SW

4

PGND

13

14

15

16

AGND

SS

FB

FREQ

5

6

7

8

EN

SYNC

PG

BIAS

9

10

11

12

PGND

SW

BST

VCC

QFN-16 (3mmx4mm)

ABSOLUTE MAXIMUM RATINGS (1)

Supply voltage (VIN) .......................-0.3V to 40V

Switch voltage (VSW) ............. -0.3V to VIN + 0.3V

BST voltage (VBST) ............................ VSW + 6.5V

EN voltage (VEN) .............................-0.3V to 40V

BIAS voltage (VBIAS) ........................-0.3V to 20V

All other pins .....................................-0.3V to 6V

Continuous power dissipation (TA = +25°C) (2)(5)

QFN-16 (3mmx4mm) ................................. 2.9W

Junction temperature ................................150°C

Lead temperature .....................................260°C

Storage temperature .................. -65°C to 150°C

Electrostatic Discharge (ESD) Ratings

Human body model (HBM)......................... ±2kV

Charged device model (CDM).................. ±750V

Recommended Operating Conditions

Supply voltage (VIN) ........................ 3.3V to 36V

Operating junction temp. (TJ) (3)………………….

…………………………………...-40°C to +125°C

Thermal Resistance (4)

θJA

θJC

QFN-16 (3mmx4mm)

JESD51-7 .............................. 48....... 11..°C/W(4)

EV9842-L-00A

……........….…43.........5..°C/W(5)

NOTES:

1) Absolute maximum ratings are rated under room temperature

unless

otherwise noted.

Exceeding these ratings

may

damage the device.

2) The maximum allowable power dissipation is a function of the

maximum junction temperature, TJ(MAX), the junction-to-

ambient

thermal

resistance,

θ

JA,

and

the

ambient

temperature, TA. The maximum allowable continuous power

dissipation at any ambient temperature is calculated by PD

(MAX) = (TJ (MAX) - TA) / θJA. Exceeding the maximum

allowable power dissipation can produce an excessive die

temperature, and the regulator may go into thermal shutdown.

Internal thermal shutdown circuitry protects the device from

permanent damage.

3) Mission profiles requiring operation above 125°C TJ may be

supported; contact MPS for details.

4) Measured on JESD51-7, 4-layer PCB. The values given in

this table are only valid for comparison with other packages

and cannot be used for design purposes. These values were

calculated in accordance with JESD51-7, and simulated on a

specified

JEDEC

board.

They

do

not

represent

the

performance obtained in an actual application, the value of

θ

JC

shows the thermal resistance from junction-to-case bottom.

5) Measured on an MPS

EVB: 6.35cmx6.35cm, 2oz. copper

thickness, 4-

layer PCB, the value of θ

JC shows the thermal

resistance from junction-to-case top.