MPQ2167 – 6V, 4A, FREQUENCY PROGRAMMABLE, BUCK CONVERTER, AEC-Q100 QUALIFIED

MPQ2167 Rev. 1.0

www.MonolithicPower.com

4

3/21/2019

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

© 2019 MPS. All Rights Reserved.

PIN FUNCTIONS

PIN #

Name

Description

1

IN

Input supply. IN supplies all power to the converter. Place a decoupling capacitor

to ground as close as possible to the IC to reduce switching spikes.

2

PGND

Power ground. Connect to larger copper areas to the negative terminals of the

input and output capacitors.

3

FREQ

Switching frequency programmable input.

Connect a resistor to GND to set the switching frequency.

4

AGND

Analog ground. Ground for internal logic and signal circuit.

5

FB

Feedback point. Negative input of the error amplifier. Connect to the tap of an

external resistor divider between the output and GND to set the regulation voltage.

In addition, power good and under-voltage lockout circuits use FB to monitor the

output voltage.

6

SS

Soft-start. Place a capacitor from SS to GND to set the soft-start time externally.

Floating this pin will activate the internal default 1ms soft-start setting.

7

SW

Switch output. Internally connect to the high-side and low-side power switches.

Outside connect to the output inductor.

8

PG

Power good indicator. The PG output is an open drain that connects to VIN by an

internal pull-up resistor. PG is pulled up to VIN when the FB voltage is within 15% of

the regulation level. If the FB voltage is out of that regulation range, it will drop

down.

9

SYNCO

Synchronization output. Output a 180° out of phase clock to the other devices.

10

MODE

Mode selection. Connect to logic high or input voltage VIN for FCCM. Connect to

logic low or ground for AAM. Do not leave MODE floating.

11

EN

Enable input. Drive EN high to turn on the device. Leaving EN floating or grounded

will disable the device.

ABSOLUTE MAXIMUM RATINGS (1)

VIN ..............................................................+6.5V

VSW -0.3V(-3V for<10ns) to 6.5V(7.0V for<10ns)

All Other Pins ............................... -0.3V to +6.5V

Continuous Power Dissipation (TA = +25°C) (2)

...................................................................1.78W

Junction Temperature............................... 150°C

Lead Temperature .................................... 260°C

Storage Temperature................-65°C to +150°C

Recommended Operating Conditions

Continuous Supply Voltage VIN ...... 2.7V to 6.0V

Output Voltage VOUT....................... 0.606V to VIN

Load Current Range ............................. 0A to 4A

Operating Junction Temp.(TJ)-40°C to +125°C (3)

Thermal Resistance

θJA

θJC

QFN-11(2mmx3mm) ...........70..........15 °C/W(4)

QFN-11(2mmx3mm) ......... 42........13.5 °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 θJA, 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 will cause excessive die temperature, and the

module will go into thermal shutdown. Internal thermal

shutdown circuitry protects the device from permanent

damage.

3) Operating junction temperature above 125°C may be

supported; contact MPS for details.

4) Measured on JESD51-7, 4-layer PCB.

5) Measured on standard EVB, 6.35cmx6.35cm, 4-layer PCB.