Maxim > Products > Automotive > MAX16929

MAX16929

Automotive TFT-LCD Power Supply with Boost Converter and Gate Voltage Regulators

High-Voltage TFT-LCD Power Supply Offers a Wide Array of Trim Options to Fit Any Automotive Display Power Requirements

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX16929 is a highly integrated power supply for automotive TFT-LCD applications. The device integrates one buck converter, one boost converter, one 1.8V/3.3V regulator controller, and two gate voltage regulators. The device comes in several versions to satisfy common automotive power-supply requirements (see the Ordering Information/Selector Guide table in the full data sheet).

Designed to operate from a single 4V to 28V supply or 5.5V to 28V supply, the device is ideal for automotive TFT-LCD applications. Both the buck and boost converters use spread-spectrum modulation to reduce peak interference and to optimize EMI performance.

The sequencing input (SEQ) allows flexible sequencing of the positive-gate and negative-gate voltage regulators. The power-good indicator (PGOOD) indicates a failure on any of the converters or regulator outputs. Integrated thermal shutdown circuitry protects the device from overheating.

The MAX16929 is available in a 28-pin TSSOP package with exposed pad, and operates over the -40°C to +105°C temperature range.

Data Sheet

Download	Rev 2	(PDF, 2.5MB)
E-Mail

An evaluation kit is available: MAX16929EVKIT

Key Features

Operating Voltage Range of 4V to 28V (Buck) or 3V to 5.5V (Boost)
Independent 28V Input Buck Converter Powers TFT Bias Supply Circuitry and External Circuitry
High-Power (Up to 6W) Boost Output Providing Up to 18V
1.8V or 3.3V Regulator Provides 500mA with External npn Transistor
One Positive-Gate Voltage Regulator Capable of Delivering 20mA at 28V
One Negative-Gate Voltage Regulator
High-Frequency Operation
- 2.1MHz (Buck Converter)
- 2.2MHz (Boost Converter)
Flexible Stand-Alone Sequencing
True Shutdown™ Boost Converter
6μA Low-Current Shutdown Mode (Buck)
Internal Soft-Start
Overtemperature Shutdown
-40°C to +105°C Operation

Applications/Uses

Automotive Central Information Displays
Automotive Dashboards
Automotive Navigation Systems

Key Specifications:

Multifunction PMICs

Part Number

Primary Topology

Monitor/Control Features

DC-DC/Power Features

V_IN
(V)

V_OUT
(V)

Max. I_OUT
(A)

Oper. Freq.
(kHz)

Inverting Outputs

Package/Pins

Smallest Available Pckg.
(mm²)

Budgetary Price

min

max

min

max

≥

≤

max w/pins

See Notes

MAX16929

Step-Up/Down

Low Batt./POK Output

Avg. Current Mode Control

Current Limit

Fixed Freq./PWM

Internal Pwr. FETs

Soft Start

-24

2000

TSSOP-EP/28

64.2

$4.04 @1k

See All Multifunction PMICs (96)

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.

Diagram

Typical Application Circuit

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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.: 19-5857 Rev 2; 2012-01-05
This page last modified: 2012-01-05