XTPS61322DBZT Texas Instruments Integrated Circuit (SOT23 (3-Pin)) In Stock
XTPS61322DBZT is a current-mode PWM boost switching regulator from Texas Instruments accepting inputs from 0.9 V to 5.5 V in a SOT-23-3 package. It targets ultra-low-voltage energy harvesting and single-cell battery boost applications, available worldwide.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- OBSOLETE
- Datasheet
- XTPS61322DBZT Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low minimum input voltage of 0.9 V enables single-cell NiMH, alkaline, or energy-harvesting source operation
- Current-mode PWM control delivers fast transient response and inherent peak current limiting
- Smallest SOT-23-3 (R-PDSO-G3) package with minimal external components for space-constrained portable designs
Applications
XTPS61322DBZT is engineered for energy-harvesting circuits, single-cell alkaline or NiMH battery packs, and ultra-low-voltage start-up scenarios where the input may be as low as 0.9 V. The boost topology steps up the low-voltage input to a regulated rail suitable for powering sensors, BLE SoCs, or microcontrollers that require 1.8 V to 3.3 V. The SOT-23-3 package minimises the total solution area, making it ideal for coin-cell IoT tags, smart patches, and compact wearable devices.
Specifications
| Date Of Intro | 2017-11-01 |
| YTEOL | 0 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 0.9V |
| Input Voltage-Nom | 1.2V |
| JESD-30 Code | R-PDSO-G3 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 1.2A |
| Output Voltage-Max | 5V |
| Output Voltage-Min | 2.2V |
| Output Voltage-Nom | 2.2V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TO-236 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE |
| Surface Mount | YES |
| Switcher Configuration | BOOST |
| Switching Frequency-Max | 2000kHz |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Package | SOT23 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for XTPS61322DBZT:
Switching Regulator, Voltage-mode, 1.2A, 800kHz Switching Freq-Max, BICMOS, PQCC16
Frequently Asked Questions
How low can the input voltage of XTPS61322DBZT go while still maintaining regulation?
XTPS61322DBZT can operate with input voltages as low as 0.9 V, enabling it to harvest energy from a single alkaline or NiMH cell deep into its discharge curve, or from low-voltage thermoelectric and solar sources. This compares favourably to many standard boost converters that require at least 1.8 V input, giving designers an additional 0.9 V of usable input headroom for extended battery-powered run time.
For a BLE sensor node powered by a coin cell, why is XTPS61322DBZT in SOT-23-3 a suitable choice?
A CR2032 coin cell delivers 3 V nominal but can sag below 2 V at end of life. XTPS61322DBZT's 0.9 V minimum input ensures the BLE SoC's 1.8 V to 3.3 V rail stays regulated even when the coin cell voltage drops to 1 V, extending useful battery life. The SOT-23-3 package occupies only about 5 mm² of PCB and typically requires just 2 to 3 passive components, keeping the total power supply footprint under 20 mm².
How does the current-mode PWM architecture of XTPS61322DBZT improve load transient performance compared to voltage-mode boost converters?
In current-mode control, an inner current loop senses inductor current cycle-by-cycle and adjusts duty cycle immediately when load current changes, typically recovering regulation within 5 to 20 switching cycles. Voltage-mode converters rely on the slower outer voltage loop alone, which can allow output voltage deviations of 50 mV to 200 mV during fast load steps from 0 A to the rated output current. For microcontroller and RF transmitter loads that draw burst currents, this faster response reduces the required output capacitor size.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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