MP9928 datasheet(3/25 Pages) MPS

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MP9928—4V TO 60V SYNCHRONOUS STEP-DOWN CONTROLLER

MP9928 Rev. 1.0

www.MonolithicPower.com

5/20/2016

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

PACKAGE REFERENCE

TOP VIEW

SYNCO

SENSE+

EN/SYNC

COMP

VCC2

FREQ

BST

SENSE-

PGND

SGND

VCC1

CCM/AAM

ILIM

SYNCO

VCC1

VCC2

COMP

SGND

PGND

SENSE+

SENSE-

TSSOP-20 EP

QFN-20 (3mmx4mm)

ABSOLUTE MAXIMUM RATINGS

(1)

Input supply voltage (VIN) ............... -0.3V to 65V

EN/SYNC....................................... -0.3V to 50V

SW .........................-0.3V(-4V for <20ns) to 65V

BST - SW...................................... -0.3V to 6.5V

Supply voltage (VCC1) ................. -0.3V to 6.5V

External supply voltage (VCC2) ..... -0.3V to 15V

SENSE + / - ................................... -0.3V to 28V

Differential sense (SENSE+ to SENSE-)............

................................................... -0.7V to +0.7V

TG ..............................VSW - 0.3V to VBST + 0.3V

BG ..................................-0.3V to VCC1 + 0.3V

All other pins............................... -0.3V to +6.5V

Continuous power dissipation (TA = +25°C)

(2)

TSSOP-20 EP ...........................................3.1W

QFN-20 (3mmx4mm) .................................2.6W

Junction temperature .............................. .150

°C

Lead temperature .................................... 260

°C

Storage temperature................ -65

°C to +175°C

Recommended Operating Conditions

(3)

Supply voltage (VIN)......................... 4V to 60V

(4)

Output voltage (VOUT) ................................

≤24V

Supply voltage for (VCC2).................. 5V to 12V

Operating junction temp. (TJ)....-40°C to +125°C

Thermal Resistance

(5)

θJA

θJC

TSSOP-20 EP ........................ 40 ....... 8....

°C/W

QFN-20 (3mmx4mm) ............. 48 ...... 10...

°C/W

NOTES:

1) 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

)/θ

JA.

Exceeding the maximum allowable power

dissipation produces an excessive die temperature, causing

the regulator to go into thermal shutdown. Internal thermal

shutdown circuitry protects the device from permanent

damage.

3) The device is not guaranteed to function outside of its

operating conditions.

4) UVLO_rising is 5V but UVLO_falling is lower than 4V, so

input must be >5V for startup, and after start up MP9928 can

work down to 4V input voltage.

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

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