LMZ10501 - DC/DC nanomodule with load current up to 1A. Free Technical Library News

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LMZ10501 - DC/DC nanomodule with load current up to 1 A

11.06.2015

Texas Instruments has redesigned the housing of the LMZ10501 miniature DC-DC synchronous buck regulator module, a member of the SIMPLE SWITCHER family, for ease of use and installation. Now the LMZ10501 is available only in a SIL package with dimensions of 3,0x2,6x1,2 mm - in this case, the crystal is mounted under the inductance, thereby providing better heat dissipation due to heat transfer to the PCB and reducing the risk of damage to the module itself during installation.

Despite its small size, the LMZ10501 has excellent features such as low output ripple, low EMI and high efficiency.

The regulator is easy to use and three capacitors and two resistors are enough to provide basic functionality. The voltage conversion in the regulator occurs using PWM. The selected frequency of the built-in PWM generator (2 MHz) allows you to achieve a balance between low ripple and high efficiency. In addition, the use of shielded inductance in the converter, combined with the chassis used and the ability to place external input/output capacitors close to the chassis, allows low electromagnetic emissions (EMI) and CISPR22 Class B compliance to be achieved without the need for additional filters.

Also, the module implements additional functions that simplify its use in the device. To protect the converter in case of excessive current load, a peak current limiting unit is built into the module through built-in power switches. The built-in soft starter avoids high starting currents and output voltage surges when the supply voltage is applied.

The main area of application of the presented nanomodules is applications that are sensitive to the occupied area, with input voltage levels of 3,3 and 5 V with an output current of up to 1 A. Such applications include test and measurement devices, industrial automation devices, etc.

Key Features:

Maximum current: up to 1 A;
Input voltage range: 2,7 to 5,5 V;
Output voltage range: 0,6 to 3,6 V;
Efficiency: up to 95%;
Built-in inductance;
Output voltage adjustment;
PWM generator frequency: 2 MHz;
Integrated compensation chain;
Soft start control;
Over current protection;
Temperature protection;
Low Input Voltage Lockout (UVLO);
Small body 8-LLP (3,0x2,6x1,2 mm).

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