The LMZ21701SILT Nano Module is an easy-to-use step-down DC/DC solution capable of driving up to 1000 mA load in space-constrained applications. Only an input capacitor, an output capacitor, a softstart capacitor, and two resistors are required for basic operation. The Nano Module comes in 8-pin DFN footprint package with an integrated inductor. The LMZ21701SILT architecture is based on DCS-Control™ (Direct Control with Seamless Transition into Power Save Mode).
This architecture combines the fast transient response and stability of hysteretic type converters along with the accurate DC output regulation of voltage mode and current mode regulators.
The LMZ21701SILT architecture uses pulse width modulation (PWM) mode for medium and heavy load requirements and Power Save Mode (PSM) at light loads for high efficiency. In PWM mode the switching frequency is controlled over the input voltage range. The value depends on the output voltage setting and is typically reduced at low output voltages to achieve higher efficiency.
In PSM the switching frequency decreases linearly with the load current. Since the architecture of the device supports both operation modes (PWM and PSM) in a single circuit building block, the transition between the modes of operation is seamless with minimal effect on the output voltage.
Applications
• Point-of-Load Conversions from 3.3 V, 5 V, or 12 V Input Voltage• Space Constrained Applications
• LDO Replacement
LMZ21701SILT PDF
Feature
- IntegratedInductor
- Miniature 3.5 mm × 3.5 mm × 1.75 mm Package
- 35-mm2Solution Size (Single Sided)
- -40°C to 125°C Junction TemperatureRange
- Adjustable Output Voltage
- IntegratedCompensation
- Adjustable Soft-Start Function
- Starts intoPrebiased Loads
- Power Good and Enable Pins
- SeamlessTransition to Power-Save Mode
- Up to 1000 mA OutputCurrent
- Input Voltage Range 3 V to 17 V
- Output VoltageRange 0.9 V to 6 V
- Efficiency up to 95 %
- 1.5-μA ShutdownCurrent
- 17-μA Quiescent Current
- Create aCustom Design Using the LMZ21701 WithWEBENCH? PowerDesigner
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DescriptionThe LMZ21701 nano module is an easy-to-use step-down DC/DC solution capable of driving upto 1000-mA load in space-constrained applications. Only an input capacitor, an output capacitor, asoft-start capacitor, and two resistors are required for basic operation.
