MAX16993

Step-Down Controller with Dual 2.1MHz Step-Down DC-DC Converters

Highly Integrated Automotive PMIC with Three DC-DC Step-Down Outputs, Low IQ, and Low Minimum On-Time


Please check latest availability status for a specific part variant.

Description

The MAX16993 power-management integrated circuit (PMIC) is a 2.1MHz, multichannel, DC-DC converter designed for automotive applications. The device integrates three supplies in a small footprint. The device includes one high-voltage step-down controller (OUT1) designed to run directly from a car battery and two low-voltage step-down converters (OUT2/OUT3) cascaded from OUT1. Under no-load conditions, the MAX16993 consumes only 30µA of quiescent current, making it ideal for automotive applications.

The high-voltage synchronous step-down DC-DC controller (OUT1) operates from a voltage up to 36V continuous and is protected from load-dump transients up to 42V. There is a pin-selectable frequency option of either 2.1MHz or a factory-set frequency for 1.05MHz, 525kHz, 420kHz, or 350kHz. The low-voltage, synchronous step-down DC-DC converters run directly from OUT1 and can supply output currents up to 3A.

The device provides a spread-spectrum enable input (SSEN) to provide quick improvement in electromagnetic interference when needed. There is also a SYNC input for providing an input to synchronize to an external clock source (see the Selector Guide in the full data sheet). The device includes overtemperature shutdown and overcurrent limiting. The device also includes individual active-low RESET_ outputs and individual enable inputs. The active-low RESET_ outputs provide voltage monitoring for all output channels.

The MAX16993 is available in a 32-pin TQFN/side-wettable QFND-EP package and is specified for operation over the -40°C to +125°C automotive temperature range.

MAX16993: Typical Application Circuit MAX16993: Typical Application Circuit Enlarge+

Key Features

  • High-Efficiency Voltage DC-DC Controller Saves Power
    • 3.5V to 36V Operating Supply Voltage
    • Output Voltage: Pin Selectable, Fixed, or Resistor-Divider Adjustable
    • 350kHz to 2.1MHz Operation
    • 30µA Quiescent Current with DC-DC Controller Enabled
  • Dual 2.1MHz DC-DC Converters with Integrated FETs Save Space
    • OUT2 and OUT3 are Cascaded from OUT1, Improving Efficiency
    • 3A Integrated FETs
    • 0.8V to 3.95V Output Voltage
    • Fixed or Resistor-Divider-Adjustable Output Voltage
    • 180° Out-of-Phase Operation
    • Robust for the Automotive Environment
  • Current-Mode Architecture with Forced-PWM and Skip Modes of Operation
    • Frequency Synchronization Input/Output Reduces System Noise
    • Individual Enable Inputs and Active-Low RESET_ Outputs
    • Overtemperature and Short-Circuit Protection
    • AECQ-100 Qualified
    • 32-Pin TQFN-EP (5mm x 5mm x 0.75mm) and Side-Wettable QFND-EP (5mm x 5mm x 0.8mm)
    • -40°C to +125°C Operating Temperature Range

Applications/Uses

  • Automotive
  • Industrial
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeSynchronous SwitchingDC-DC OutputsOper. Freq.
(kHz)
Package/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX16993 3.5360.85.6
1.2
1.35
1.5
3.15
3.3
5
Preset
Resistor
3
External
Internal
Yes3
350
2100
QFND/32
TQFN/32
TQFN-CU/32
$4.77 @1k
See All Step-Down Switching Regulators (367)
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 and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


MAX16993EVKIT: Evaluation Kit for the MAX16993
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >

 
Status:
Package:
Temperature:

Related Resources


MAXM17904
4.5V to 24V, 300mA Himalaya uSLIC Step-Down Power Module

  • Easy to Use
  • High Efficiency
  • Flexible Design

MAXM17905
4.5V to 24V, 300mA Himalaya uSLIC Step-Down Power Module

  • Easy to Use
  • High Efficiency
  • Flexible Design

MAXM17906
4.5V to 24V, 300mA Himalaya uSLIC Step-Down Power Module

  • Easy to Use
  • High Efficiency
  • Flexible Design

MAXM15065
4.5V to 60V, 300mA Step-Down uSLIC Power Module

  • Easy to Use
  • High Efficiency
  • Flexible Design

MAXM15066
4.5V to 60V, 300mA Step-Down uSLIC Power Module

  • Easy to Use
  • High Efficiency
  • Flexible Design

MAXM15067
4.5V to 60V, 300mA Step-Down uSLIC Power Module

  • Easy to Use
  • High Efficiency
  • Flexible Design

MAX20010C
Automotive Single 6A Step-Down Converters

  • Fully Integrated, Synchronous 6A DC-DC Converter Enables Small Solution Size
  • High-Precision Voltage Regulator for Applications Processors
  • Low-Noise Feature Reduces EMI

MAX20010D
Automotive Single 6A Step-Down Converters

  • Fully Integrated, Synchronous 6A DC-DC Converter Enables Small Solution Size
  • High-Precision Voltage Regulator for Applications Processors
  • Low-Noise Feature Reduces EMI

MAX20048
Automotive 40V, 55µA IQ, 2.2MHz, H-Bridge Buck-Boost Controller

  • Meets Stringent Automotive Quality and Reliability Requirements
  • Efficient Solution in a Small Solutions Size
  • Low Quiescent Current Helps Designers Meet Stringent OEM Current Requirements

MAX20039
Automotive, 2V to 36V, 2.2MHz, 0.6A/1.2A Buck-Boost Converters with Integrated H-Bridge Architecture

  • Meets Stringent Automotive Quality and Reliability Requirements
  • Low Quiescent Current Helps Designers Meet Stringent OEM Current Requirements (B and D version only)
  • High Switching Frequency Allows Use of Small External Components

MAX20040
Automotive, 2V to 36V, 2.2MHz, 0.6A/1.2A Buck-Boost Converters with Integrated H-Bridge Architecture

  • Meets Stringent Automotive Quality and Reliability Requirements
  • Low Quiescent Current Helps Designers Meet Stringent OEM Current Requirements (B and D version only)
  • High Switching Frequency Allows Use of Small External Components

MAX20029B
Automotive Quad/Triple/Quad Low-Voltage Step-Down DC-DC Converters

  • Quad Step-Down DC-DC Converters with Integrated FETs
  • Operate from 3.0V to 5.5V Supply Voltage
  • 1.0V to 4.0V Fixed or Adjustable Output Voltage

MAX20029C
Automotive Quad/Triple/Quad Low-Voltage Step-Down DC-DC Converters

  • Quad Step-Down DC-DC Converters with Integrated FETs
  • Operate from 3.0V to 5.5V Supply Voltage
  • 1.0V to 4.0V Fixed or Adjustable Output Voltage

MAX20029, MAX20029B, MAX20029C
Automotive Quad/Triple/Quad Low-Voltage Step-Down DC-DC Converters

  • Quad Step-Down DC-DC Converters with Integrated FETs
  • Operate from 3.0V to 5.5V Supply Voltage
  • 1.0V to 4.0V Fixed or Adjustable Output Voltage

MAX77827
5.5V Input, 1.8A/3.1A Switch Buck-Boost Converter with 6μA IQ

  • 1.8V to 5.5V Input Voltage Range
  • 2.3V to 5.3V Single Resistor Adjustable Output Voltage
  • 1.6A Maximum Output Current (3.1A ILIM Option, Buck Mode)

MAXM15465
4.5V to 42V, 300mA Himalaya uSLIC Step-Down Power Module

  • Easy to Use
  • High Efficiency
  • Flexible Design

MAXM15466
4.5V to 42V, 300mA Himalaya uSLIC Step-Down Power Module

  • Easy to Use
  • High Efficiency
  • Flexible Design

MAXM15467
4.5V to 42V, 300mA Himalaya uSLIC Step-Down Power Module

  • Easy to Use
  • High Efficiency
  • Flexible Design

MAXM17623
2.9V to 5.5V, 1A Himalaya uSLIC Step-Down Power Modules

  • Easy to Use
  • High Efficiency
  • Flexible Design

MAXM17624
2.9V to 5.5V, 1A Himalaya uSLIC Step-Down Power Modules

  • Easy to Use
  • High Efficiency
  • Flexible Design

MAX20049
Flexible, Compact Quad Power Supply with 2.2MHz, 500mA Buck Converters and Dual LDOs for Automotive Camera Modules

  • Small Solution Size
  • EMI Solutions
  • Self-Protected and Robust

MAX17673
Integrated 4.5V to 60V Synchronous 1.5A HV Buck and Dual 2.7V to 5.5V, 1A Buck Regulators

  • Reduces External Components and Total Cost
  • Integrates Three DC-DC Regulators
  • Reduces Power Dissipation

MAX77813
High-Efficiency Buck-Boost Converter

  • VIN Range: 2.30V to 5.5V
  • VOUT Range: 2.60V to 5.14V (I2C Programmable in 20mV Step)
  • Up to 2A Output Current in Boost Mode (VIN = 3.0V, VOUT = 3.4V, ILIM = High)