Overview
The LMZ34202RVQT, produced by Texas Instruments, is a highly integrated power module designed for efficient and compact power supply solutions. This device combines a 2-A DC-DC converter with a shielded inductor and necessary passives into a low-profile, 43-pin QFN package. The module is optimized for small footprint designs, measuring 10 mm × 10 mm × 4.3 mm, and offers excellent thermal performance with a thermal resistance of 14°C/W. It is suitable for a wide range of applications requiring adjustable output voltages and high efficiency.
Key Specifications
| Parameter | Test Conditions | Min | Unit | ||
|---|---|---|---|---|---|
| Input Voltage (PVIN) | Over IOUT range | 4.5 | - | 42 | V |
| UVLO (PVIN undervoltage lockout) | PVIN increasing | 3.2 | - | 3.8 | V |
| Output Voltage Adjust Range (VOUT) | Over IOUT range | 2.5 | - | 7.5 | V |
| Set-point Voltage Tolerance | TA = 25°C, IOUT = 200 mA | - | ±0.7 | ±1.5 | % |
| Switching Frequency Range | - | 200 kHz | 500 kHz | 1 MHz | kHz |
| Output Current (IOUT) | - | - | - | 2 A | A |
| Operating Temperature Range | - | -40°C | - | 105°C | °C |
Key Features
- Complete integrated power solution in a small footprint, low-profile design (10 mm × 10 mm × 4.3 mm QFN package)
- Wide-output voltage adjust range (2.5 V to 7.5 V)
- Adjustable switching frequency (200 kHz to 1 MHz)
- Synchronizes to an external clock
- Automatic PFM mode for light load efficiency
- Adjustable soft-start time
- Output voltage sequencing / tracking
- Power good output
- Programmable undervoltage lockout (UVLO)
- Over-temperature thermal shutdown protection
- Over-current protection (hiccup mode)
- Pre-bias output start-up
- Enhanced thermal performance: 14°C/W
- Meets EN55022 Class B emissions
- Integrated shielded inductor
Applications
- Industrial and motor controls
- Automated test equipment
- Medical and imaging equipment
- High density power systems
Q & A
- What is the input voltage range of the LMZ34202?
The input voltage range is from 4.5 V to 42 V.
- What is the adjustable output voltage range of the LMZ34202?
The output voltage can be adjusted from 2.5 V to 7.5 V.
- What is the maximum output current of the LMZ34202?
The maximum output current is 2 A.
- Can the switching frequency of the LMZ34202 be adjusted?
- What are the thermal protection features of the LMZ34202?
The device includes over-temperature thermal shutdown protection and enhanced thermal performance with a thermal resistance of 14°C/W.
- Does the LMZ34202 support power good output?
- What is the operating temperature range of the LMZ34202?
The operating temperature range is from –40°C to 105°C.
- Does the LMZ34202 have over-current protection?
- Can the LMZ34202 be used in high density power systems?
- How does the LMZ34202 handle light load conditions?
The device features automatic PFM mode to improve efficiency during light load conditions.
