Maxim > Products > Power and Battery Management > MAX8836Z

MAX8836Z

1.2A PWM Step-Down Converter in 2mm x 2mm WLP/UCSP for PA Power

Saves Space and Power by Integrating a High-Efficiency Step-Down Converter and High-PSRR, Low-Noise LDO

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX8836Z high-frequency step-down converter is optimized to provide a fixed output voltage with ultra-low dropout. The device integrates a high-efficiency PWM step-down converter for medium- and low-power transmission, and a 60mΩ typical bypass FET for ultra low-dropout operation. A 200mA low-noise, high-PSRR low-dropout regulator (LDO) is also integrated.

Fast-switching allows the use of small ceramic input and output capacitors while maintaining low ripple voltage. The feedback network is integrated, further reducing external component count and total solution size. At high duty cycle, the MAX8836Z automatically switches to the bypass mode, connecting the input to the output through a low-impedance (60mΩ typ) MOSFET. The LDO in the MAX8836Z is designed for low-noise operation (35µV_RMS typ). Both the PWM step-down and LDO are individually enabled through separate logic-control interfaces.

The MAX8836Z is available in 16-bump, 2mm x 2mm WLP and UCSP™ packages (0.7mm max height).

Data Sheet

Download	Rev 1	(PDF, 420kB)
E-Mail

Key Features

PA Step-Down Converter
- Selectable Output Voltage (3.1V or 3.4V)
- 25µs Settling Time for 3.1V to 3.4V_OUT Change
- 60mΩ PFET at 100% Duty-Cycle for Low Dropout
- Low Output Voltage Ripple
- 1.2A Output Drive Capability
- ±2% Output Voltage Accuracy
- Tiny External Components
Low-Noise LDO
- Low 35µV_RMS (typ) Output Noise
- High 65dB (typ) PSRR
- Guaranteed 200mA Output Current Drive Capability
- ON/OFF Control
Low 0.1µA Shutdown Current
2.7V to 5.5V Supply Voltage Range
Thermal Shutdown
Tiny 2mm x 2mm x 0.7mm WLP and UCSP Packages (4 x 4 Grid)

Applications/Uses

Smartphones
WCDMA/NCDMA Cellular Handsets
Wireless PDAs

Key Specifications:

Step-Down Switching Regulators

Part Number

V_IN
(V)

V_OUT
(V)

Preset V_OUT
(V)

Max. I_OUT
(A)

Output Adjust. Method

DC-DC Outputs

Oper. Freq.
(kHz)

Package/Pins

Smallest Available Pckg.
(mm²)

min

max

min

max

≤

max w/pins

MAX8836Z

2.7

5.5

3.1

3.4

3.1

3.4

1.2

Digital/VID

500

UCSP(R)/16

WLP/16

4.5

See All Step-Down Switching Regulators (288)

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-4059 Rev 1; 2010-07-08
This page last modified: 2010-11-09