MP8796B datasheet(6/52 Pages) MPS

6 / 52 page

MP8796B – 16V, 30A, SYNCHRONOUS STEP-DOWN CONVERTER WITH PMBUS

MP8796B Rev. 1.0

www.MonolithicPower.com

1/19/2020

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

PIN FUNCTIONS (continued)

Pin #

Name

Description

VCC

Internal 3.3V LDO output. VCC powers the analog and digital control circuits. Decouple

VCC with a minimum 4.7µF ceramic capacitor, placed as close to VCC as possible. X7R

or X5R-grade dielectric ceramic capacitors are recommended. During MTP programming,

a 5V voltage with a 300ms period may be observed on VCC. The VCC pin does not

accept external voltage bias. For multi-phase applications, connect the VCC pins of all

phases together.

BST

Bootstrap. A capacitor connected between SW and BS is required to form a floating

supply across the high-side switch driver.

ABSOLUTE MAXIMUM RATINGS (1)

Supply voltage (VIN) ...................................... 18V

VIN - VSW (DC)................................-0.3V to +18.3V

VIN - VSW (25nc) .................................... -5V to +25V

VSW (DC)........................................-0.3V to +18.3V

VSW (25ns) (2)......................................... -5V to +25V

VBST.............................................................22.3V

VBST - VSW (25ns) (2) ............................................. 5V

VCC, VDRV ..................................................... 4.5V

VCC (1s) (3).......................................................... 6V

All other pins ................................ -0.3V to +4.3V

All other pins (1s) (3)........................................... 6V

Junction temperature ................................ 170°C

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

Storage temperature.................-65°C to +170°C

ESD Rating

Human-body model (HBM)......................... ±1kV

Charged-device model (CDM)................... ±2kV

Recommended Operating Conditions (4)

Supply voltage (VIN) ............................ 4V to 16V

Output voltage (VOUT)...................... 0.6V to 5.5V

External VDRV bias ........................... 2.9V to 3.6V

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

Thermal Resistance (5)

θJB θJC_TOP

TQFN-25 (4mmx5mm)......... 1.8 ....... 6.3 ...°C/W

Notes:

1) Exceeding these ratings may damage the device.

2) Specified

design.

Measured

using

differential

oscilloscope probe.

3) Voltage rating during MTP programming.

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

operating conditions.

5) θJB is the thermal resistance from the junction to the board

around the PGND soldering point.

θJC_TOP is the thermal resistance from the junction to the top of

the package.

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