LTM4655

RECOMMENDED FOR NEW DESIGNS

EN55022B Compliant 40V, Dual 4A or Single 8A Step-Down or 50W Inverting μModule Regulator

Analog Devices LTM4655 Product Info

10 February 2026 6

Features

Dual 4A/Single 8A Low EMI Switch Mode Power Supply
EN55022 Class B Compliant
Two Fully Independent Channels, Each Configurable for Positive or Negative Output Voltage Polarity
Output Voltage Range: 0.5V ≤ |V_OUTn ⁺ – V_OUTn ^–| ≤ 26.5V
Wide Input Voltage Range: Up to 40V
- 3.1V or 3.6V Start-Up, Configuration-Dependent

±1.67% Total DC Output Voltage Error Over Line, Load and Temperature
Analog Output Current Indicator (Positive-V_OUT Only)
LDO_OUT: 5V Fixed, 25mA Capable LDO
Parallelable with LTM4651/LTM4653
Constant-Frequency Current Mode Control
Power Good Indicators and Programmable Soft-Start
Overcurrent and Overtemperature Protection
16mm × 16mm × 5.01mm BGA Package

Part details & applications

The LTM4655 is an ultralow noise 40V, dual 4A or single 8A DC/DC μModule^® regulator designed to meet the radiated emissions requirements of EN55022. Its channels are fully independent, parallelable and capable of delivering positive or negative output polarity. Conducted emission requirements can be met by adding standard filter components. Included in the package are the switching controllers, power MOSFETs, inductors, filters and support components. A 5V, 25mA LDO and clock generator enable phase interleaving of the power switching stages, for improved EMC performance.

The LTM4655 can regulate positive V_OUTn ⁺ voltages between 0.5V and 26.5V from a 3.1V to 40V input. The LTM4655 can regulate negative V_OUTn ^– voltages between –0.5V and –26.5V from a maximum input range of 3.6V to 40V, with the span from V_INn to V_OUTn ^– not to exceed 40V. A switching frequency range of 250kHz to 3MHz is supported.

The LTM4655 is offered in a 16mm × 16mm × 5.01mm BGA package with SnPb or RoHS compliant terminal finish.

APPLICATIONS

Automated Test and Measurement
Avionics and Industrial Control Systems
Video, Imaging and Instrumentation

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