TPS62933

Part: TPS62933DRLR — Texas Instruments (TPS6293x family: TPS62932, TPS62933, TPS62933F, TPS62933P, TPS62933O)

Type: Synchronous Buck Converter

Description: 3.8–30 V input, 3 A (2 A for TPS62932) synchronous buck converter with integrated 76 mΩ / 32 mΩ MOSFETs, 0.8–22 V output, and 12 μA typical quiescent current in a 1.6 mm × 2.1 mm SOT583 package.

Operating Conditions:

• Supply voltage: 3.8–30 V
• Operating junction temperature: -40 to 150 °C
• Output voltage: 0.8–22 V
• Output current: 0–3 A (TPS62933/TPS62933x); 0–2 A (TPS62932)
• Switching frequency: 200 kHz to 2.2 MHz (set by RT pin)

Absolute Maximum Ratings:

• Max input voltage (VIN): 32 V
• SW voltage: 32 V DC (33 V transient < 10 ns)
• EN, FB, SS/PG, RT pins: 6 V max
• Max operating junction temperature: 150 °C
• Storage temperature: -65 to 150 °C
• ESD: ±2000 V HBM, ±500 V CDM

Key Specs:

• Nonswitching quiescent current (EN = 5 V): 12 μA typ (TPS62932/62933/62933P); 125 μA typ (TPS62933F); 45 μA typ (TPS62933O)
• Shutdown supply current (VEN = 0 V): 2 μA typ
• VIN UVLO: rising 3.4/3.6/3.8 V (min/typ/max); falling 3.1/3.3/3.5 V
• Feedback voltage: 800 mV typ; ±1% at TJ = 25 °C (792–808 mV); 784–816 mV over -40 to 150 °C
• High-side RDS(on): 76 mΩ typ; low-side RDS(on): 32 mΩ typ (TJ = 25 °C)
• High-side current limit: 4.2/5/5.8 A (TPS62933/x); 2.8/3.4/4 A (TPS62932)
• Low-side current limit: 2.9/3.8/4.5 A (TPS62933/x)
• EN rising threshold: 1.21 V typ (1.28 V max); falling 1.17 V typ
• Soft-start charge current: 5.5 μA typ (SS-pin variants); fixed 2 ms soft start (TPS62933P/O)
• RθJA: 112.2 °C/W (JEDEC); 60.2 °C/W (EVM)

Features:

• Peak current control mode with internal compensation
• Maximum 98% duty cycle
• Precision EN threshold
• PFM for light-load efficiency (TPS62932/62933/62933P); FCCM (TPS62933F); out-of-audio mode (TPS62933O)
• Frequency spread spectrum for lower EMI (all except TPS62933F)
• Adjustable soft-start via SS pin (TPS62932/62933/62933F); PG power-good pin (TPS62933P/O)
• Supports start-up into prebiased output
• Cycle-by-cycle current limit on high-side and low-side MOSFETs
• Non-latched OTP, OCP, OVP, UVP, and UVLO protections

Applications:

• Building automation, appliances, industrial PC
• Multifunction printers, enterprise projectors
• Portable electronics, connected peripherals
• Smart speakers, monitors
• Distributed power systems with 5-V, 12-V, 19-V, and 24-V input

Package:

• SOT583 (DRL), 8 pins, 1.60 mm × 2.10 mm, 0.5 mm pin pitch

• Configured for a wide range of applications
• -3.8-V to 30-V input voltage range
• -0.8-V to 22-V output voltage range
• -Ultra-low quiescent current: 12 μA (TPS62932, TPS62933, and TPS62933P)
• -Integrated 76-mΩ and 32-mΩ MOSFETs
• -0.8 V ± 1% reference voltage (25°C)
• -Maximum 98% duty cycle operation
• -Precision EN threshold
• -2-A (TPS62932) and 3-A (TPS62933 and TPS62933x) continuous output current
• --40°C to 150°C operating junction temperature
• Numerous pin-compatible options
• -TPS62932, TPS62933, and TPS62933F with the SS pin for adjustable soft-start time
• -TPS62933P and TPS62933O with the PG pin for a power-good indicator
• -TPS62932, TPS62933, and TPS62933P with pulse frequency modulation (PFM) for high light-load efficiency
• -TPS62933F with forced continuous current modulation (FCCM)
• -TPS62933O with out-of-audio (OOA) feature
• Ease of use and small solution size
• -Peak current control mode with internal compensation
• -200-kHz to 2.2-MHz selectable frequency
• -EMI friendly with frequency spread spectrum (TPS62932, TPS62933, TPS62933P and TPS62933O)
• -Supports start-up with prebiased 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 package
• Create a custom design with the TPS6293x using the WEBENCH ® Power Designer

• Building automation, appliances, industrial PC
• Multifunction printers, enterprise projectors
• Portable electronics, connected peripherals
• Smart speakers, monitors
• Distributed power systems with 5-V, 12-V, 19-V, and 24-V input

• SS 7

• 1 RT

• 2 EN

• 3 VIN

• 4 GND

• 5 SW

• 6 BST

• 8 FB

• PG 7

• 1 RT

• 2 EN

• 3 VIN

• 4 GND

• 5 SW

• 6 BST

• 8 FB

Figure 7-1. TPS62932, TPS62933, and TPS62933F 8-Pin SOT583 DRL Package (Top View)

Figure 7-2. TPS62933P and TPS62933O 8-Pin SOT583 DRL Package (Top View)

The electrical ratings specified in this section apply to all specifications in this document, unless otherwise noted. These specifications are interpreted as conditions that do not degrade the device parametric or functional specifications for the life of the product containing it. T J = -40°C to +150°C, VIN = 3.8 V to 30 V, unless otherwise noted.

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Over the recommended operating junction temperature range of -40°C to +150°C , unless otherwise noted (1)

Over the recommended operating junction temperature range of -40°C to +150°C, unless otherwise noted (1)

The TPS62933 is a highly integrated, synchronous, step-down, DC-DC converter. This device is used to convert a higher DC input voltage to a lower DC output voltage, with a maximum output current of 3 A.