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TPS62933 ACTIVE

3.8-V to 30-V, 3-A, 200-kHz to 2.2-MHz, low-IQ synchronous buck converter in SOT-583 package

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TPS6293x 3.8-V to 30-V, 3-A/2-A Synchronous Buck Converter in a SOT583 Package datasheet (Rev. B) (pdf, 4.21 MB)

Parameters

Switching frequency(Max)(kHz)	2200
Package size: mm2:W x L (PKG)	8SOT-5X3: 3 mm2: 1.2 x 2.1 (SOT-5X3\|8)
Features	Enable Light Load Efficiency Over Current Protection Soft Start Adjustable Spread Spectrum Synchronous Rectification
Vout(Min)(V)	0.8
Iout(Max)(A)	3
Iq(Typ)(uA)	12
Switching frequency(Min)(kHz)	200
Regulated outputs(#)	1
Vout(Max)(V)	22
Operating temperature range(C)	-40 to 150
Package Group	SOT-5X3\|8
Rating	Catalog
Vin(Max)(V)	30
Vin(Min)(V)	3.8

Features & description

Configured for a wide range of applications
- Input voltage range: 3.8 V to 30 V
- Output voltage range: 0.8 V to 22 V
- Ultra-low quiescent current: 12 µA (typical)
- Integrated 76-mΩ and 32-mΩ MOSFETs
- 0.8V ± 1% reference voltage
- Maximum 98% duty cycle operation
- Precision EN threshold
- 3-A (TPS62933) and 2-A (TPS62932) continuous output current
- Operating junction temperature: –40°C to 150°C
Ease of use and small solution size
- Peak current control mode with internal compensation
- Pulse frequency modulation (PFM) for high light-load efficiency
- Adjustable soft-start time
- 200-kHz to 2.2-MHz selectable frequency
- EMI friendly with frequency spread spectrum
- Support start-up with pre-biased output
- Cycle-by-cycle OC limit for both high-side and low-side MOSFETs
- Non-latched protections for OTP, OCP, OVP, UVP, and UVLO
- 1.6-mm × 2.1-mm SOT583
Create a custom design with the TPS62933 using the WEBENCH Power Designer
Create a custom design with the TPS62932 using the WEBENCH Power Designer

The TPS62933/TPS62932 is a high-efficiency, easy-to-use synchronous buck converter with a wide input voltage range of 3.8 V to 30 V, and supports up to 3-A/2-A continuous output current and 0.8-V to 22-V output voltage.

The device employs fixed-frequency peak current control mode for fast transient response and good line and load regulation. The optimized internal loop compensation eliminates external compensation components. Pulse frequency modulation (PFM) mode maximizes the light load efficiency. The ULQ (ultra-low quiescent) feature is extremely beneficial for long battery lifetime in low-power operation. The switching frequency can be set by the configuration of the RT pin in the range of 200 kHz to 2.2 MHz, which allows the user to optimize system efficiency, solution size, and bandwidth. The soft-start time can be adjusted by the external capacitor at the SS pin, which can minimize the inrush current when driving large capacitive load. This device also has frequency spread spectrum feature, which helps with lowering down EMI noise.

This device is in a small SOT583 (1.6-mm × 2.1-mm) package with 0.5-mm pin pitch, and has an optimized pinout for easy PCB layout and promotes good EMI performance.