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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Battery Chargers

Microchip Technology MCP73833-GPI/UN

Name: MCP73833-GPI/UN
Brand: Microchip Technology
SKU: MCP73833-GPI/UN
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MCP73833-GPI/UN

Manufacturer:: Microchip Technology

Category:: Battery Chargers

Package:: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)

Datasheet:: MCP73833-GPI/UN.pdf

Description:: IC BATT CNTRL LI-ION 1CEL 10MSOP

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Product details

Overview

MCP73833-GPI/UN from Microchip Technology is a standalone linear Li-ion/Li-polymer battery charge management controller in MSOP-10 package, featuring 4.20 V ±0.75% constant-voltage regulation, programmable 100 mA–1 A fast-charge current via external resistor, integrated P-channel MOSFET pass transistor with 300 mΩ R_DS(on), and dual open-drain STAT outputs for LED or microcontroller status indication. It enables compact USB-powered portable chargers.

For engineers reviewing the MCP73833-GPI/UN datasheet, MCP73833-GPI/UN pinout, MCP73833-GPI/UN application, or MCP73833-GPI/UN equivalent, key selection criteria include factory-set 4.20 V regulation accuracy, thermal regulation up to 150°C die temperature, preconditioning and automatic recharge thresholds, UVLO hysteresis (100 mV), and compatibility with NTC thermistor-based temperature monitoring.

Technical Context

The MCP73833-GPI/UN implements a three-phase linear charging algorithm-preconditioning (trickle), constant-current (fast charge), and constant-voltage-with factory-configured thresholds for V_PTH/V_REG (66.5%), I_TERM/I_REG (5%), and V_RTH/V_REG (94.0%). Its internal 50 µA thermistor bias current and dual comparator thresholds (1.23 V / 0.25 V) enable direct NTC interface without external circuitry.

It integrates reverse discharge protection (<2 µA leakage when V_DD < V_BAT), automatic power-down at V_DD < V_BAT + 50 mV, and thermal regulation that dynamically reduces charge current above ~105°C to maintain reliability-distinct from thermal shutdown at 150°C with 10°C hysteresis.

Key Specifications

Parameter	Value and Actual Design Meaning
V_REG (Typical)	4.20 V ±0.75% - Factory-trimmed reference enabling precise single-cell Li-ion termination without external feedback.
Fast Charge Current Range	100 mA to 1000 mA - Set by single PROG-to-VSS resistor (1–10 kΩ); supports USB 500 mA and higher-power wall adapters.
Precondition Threshold	V_PTH/V_REG = 66.5% - Triggers trickle charge below ~2.79 V to safely recover deeply depleted cells.
Charge Termination Ratio	I_TERM/I_REG = 5% - Ends CV phase when current drops to 5% of programmed I_REG, preventing overcharge.
THERM Bias Current	50 µA ±6% - Drives standard 10 kΩ NTC thermistors; eliminates need for external current source or voltage divider.
UVLO Hysteresis	100 mV - Prevents oscillation during input brownout; ensures clean entry/exit from shutdown mode.
Thermal Regulation Start	~105°C junction - Begins gradual current reduction before thermal shutdown at 150°C, optimizing charge time under thermal stress.

Pinout & Package

Package: MSOP-10 (3 mm × 3 mm, 0.5 mm pitch), exposed thermal pad (EP) electrically tied to VSS.

Pin/Terminal	Circuit Role	Design Meaning
VDD (Pins 1, 2)	Input supply rail	Accepts 3.75–6 V; powers internal circuitry and enables UVLO monitoring; bypass with ≥1 µF to VSS.
STAT1, STAT2 (Pins 3, 4)	Open-drain status outputs	Drive LEDs or microcontroller inputs; encode charge state (e.g., STAT1=LOW/STAT2=Hi-Z = charging in progress).
VSS (Pin 5)	Ground reference	Common return for battery negative, input supply, PROG resistor, and EP; must be low-impedance.
PROG (Pin 6)	Current programming & enable	Resistor to VSS sets I_REG; floating disables charger and limits reverse discharge to <2 µA.
PG (Pin 7)	Power Good indicator	Pseudo-open-drain output; LOW when VDD > UVLO threshold and VDD > VBAT - signals valid input power.
THERM (Pin 8)	NTC thermistor interface	50 µA bias current source; compares voltage to 1.23 V / 0.25 V thresholds to suspend charge on over/under-temp.
VBAT (Pins 9, 10)	Battery charge output	Drain of internal P-MOSFET; connects to battery positive; requires ≥1 µF (≤250 mA) or ≥4.7 µF (>250 mA) ceramic bypass.
EP (Pin 11)	Thermal pad	Internally connected to VSS; must be soldered to PCB ground plane for thermal dissipation (θ_JA = 113°C/W).

Key Features

Feature	Design Value
Integrated P-channel MOSFET pass transistor	R_DS(on) = 300 mΩ max at 105°C - eliminates external FET, reduces BOM count and board area in space-constrained designs.
Factory-configurable regulation voltage	4.20 V ±0.75% - matches standard Li-ion chemistry; no external resistive divider required for voltage setting.
Thermistor-based temperature qualification	Internal 50 µA current source + dual comparators - enables direct 10 kΩ NTC connection with no calibration or external components.
Automatic power-down on input removal	Enters shutdown when VDD falls within 50 mV of VBAT - prevents battery drain when adapter is unplugged.
System Test (LDO) mode	Activates by pulling THERM > (VDD − 100 mV) with no battery - provides regulated 4.20 V output up to programmed I_REG for system validation.

Applications

USB-Powered Portable Chargers	Bluetooth Headsets & Wearables
Use Scenario: Charging single-cell Li-ion batteries from 5 V USB ports in compact consumer electronics. IC Role / Device Role / Timing Role: Standalone linear charge controller managing CC/CV profile, safety timers, and status signaling. Use Value: Meets USB-IF power delivery specs with <100 µA standby current and automatic UVLO-based input qualification.	Use Scenario: Integrated battery charging in ultra-low-profile audio accessories with thermal constraints. IC Role / Device Role / Timing Role: Battery management IC providing preconditioning, thermal cutoff, and automatic recharge. Use Value: Enables safe charging down to -40°C ambient using factory-trimmed 66.5% V_PTH and 94.0% V_RTH thresholds.
Digital Cameras & MP3 Players	Personal Data Assistants (PDAs)
Use Scenario: High-reliability charging in devices requiring long-term battery health and minimal external components. IC Role / Device Role / Timing Role: Linear charger with integrated reverse discharge protection and thermal regulation. Use Value: Limits reverse leakage to <2 µA when VDD is absent, preserving battery capacity during storage.	Use Scenario: Space-limited handheld computing devices needing robust charge control and status feedback. IC Role / Device Role / Timing Role: Dual-status-output charge manager interfacing directly with host MCU GPIOs. Use Value: STAT1/STAT2 open-drain outputs simplify firmware polling or LED drive without level-shifting.

USB-Powered Portable Chargers

Bluetooth Headsets & Wearables

Use Scenario: Charging single-cell Li-ion batteries from 5 V USB ports in compact consumer electronics.

IC Role / Device Role / Timing Role: Standalone linear charge controller managing CC/CV profile, safety timers, and status signaling.

Use Value: Meets USB-IF power delivery specs with <100 µA standby current and automatic UVLO-based input qualification.

Use Scenario: Integrated battery charging in ultra-low-profile audio accessories with thermal constraints.

IC Role / Device Role / Timing Role: Battery management IC providing preconditioning, thermal cutoff, and automatic recharge.

Use Value: Enables safe charging down to -40°C ambient using factory-trimmed 66.5% V_PTH and 94.0% V_RTH thresholds.

Digital Cameras & MP3 Players

Personal Data Assistants (PDAs)

Use Scenario: High-reliability charging in devices requiring long-term battery health and minimal external components.

IC Role / Device Role / Timing Role: Linear charger with integrated reverse discharge protection and thermal regulation.

Use Value: Limits reverse leakage to <2 µA when VDD is absent, preserving battery capacity during storage.

Use Scenario: Space-limited handheld computing devices needing robust charge control and status feedback.

IC Role / Device Role / Timing Role: Dual-status-output charge manager interfacing directly with host MCU GPIOs.

Use Value: STAT1/STAT2 open-drain outputs simplify firmware polling or LED drive without level-shifting.

Equivalent & Alternatives

The following parts are listed as comparable options for similar linear Li-ion charge management applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BQ24075RGTR	Fixed 4.2 V regulation; no factory-selectable VREG options; 1.5 A max charge current; integrated LDO output.	Lacks programmable preconditioning and recharge thresholds; includes 100 mA LDO for system rail.	Choose BQ24075RGTR if LDO integration and higher current are prioritized over fine-grained thermal/recharge tuning.
TP4056	Fixed 4.2 V regulation; no thermistor interface; no PG output; 1 A max current; no UVLO hysteresis spec.	Minimal feature set - suitable only for cost-sensitive, non-temperature-monitored applications.	Choose TP4056 only for basic charging where NTC monitoring, status outputs, and UVLO stability are not required.

Compared with BQ24075RGTR and TP4056, the MCP73833-GPI/UN offers superior configurability in preconditioning, termination, and recharge thresholds, plus factory-trimmed 4.20 V accuracy and dedicated PG signaling - critical for USB-compliant, thermally aware portable designs.

Availability

MCP73833-GPI/UN is available at Aetrix Electronics and suitable for USB chargers, Bluetooth headsets, digital cameras, and portable medical monitors requiring stable component supply across industrial temperature ranges (-40°C to +85°C).

Supply support for MCP73833-GPI/UN includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Microchip Technology is a U.S.-based semiconductor manufacturer specializing in microcontrollers, analog, and interface solutions for embedded systems.

The MCP73833/4 product line delivers highly integrated, space-efficient linear battery chargers optimized for portable Li-ion/Li-polymer applications where minimal external components and factory-trimmed precision are essential.

FAQ

What is the factory-set regulation voltage for MCP73833-GPI/UN?

The MCP73833-GPI/UN has a factory-set constant-voltage regulation of 4.20 V ±0.75%, specifically calibrated for standard single-cell Li-ion batteries. This value is laser-trimmed during manufacturing and does not require external resistive feedback. The MCP73833-GPI/UN variant is part of the 4.20 V option group within the MCP73833/4 family, as confirmed in Section 1.0 of DS22005B.

How does the PROG pin function in MCP73833-GPI/UN?

The PROG pin on the MCP73833-GPI/UN serves two roles: it sets the fast-charge current via an external resistor to VSS (IREG = 1000 V / RPROG in kΩ), and acts as a hardware enable-floating the pin disables charging and limits reverse discharge to <2 µA. This dual functionality allows simple on/off control without additional logic, making MCP73833-GPI/UN ideal for battery-insertion detection schemes.

Does MCP73833-GPI/UN support thermistor-based temperature monitoring?

Yes, MCP73833-GPI/UN integrates a 50 µA ±6% current source on the THERM pin and compares the resulting voltage against factory-set thresholds of 1.23 V (upper) and 0.25 V (lower). This enables direct connection of standard 10 kΩ NTC thermistors without external biasing components. If temperature monitoring is unused, a 10 kΩ resistor from THERM to VSS satisfies the input requirement.

What is the purpose of the PG pin on MCP73833-GPI/UN?

The PG (Power Good) pin on MCP73833-GPI/UN is a pseudo-open-drain output that goes LOW when VDD exceeds the UVLO start threshold (3.55 V typical) and remains above the battery voltage (VBAT). It signals valid input power presence to system controllers. Unlike true open-drain pins, PG has an internal diode path to VDD and must only be pulled up to VDD-not to a separate rail-to avoid unintended current paths.

Can MCP73833-GPI/UN operate as a low-dropout regulator?

Yes, MCP73833-GPI/UN supports System Test (LDO) mode: when THERM is driven above (VDD − 100 mV) with no battery connected, it regulates VBAT to the factory-set 4.20 V reference with current limited to the value set by the PROG resistor. This mode enables system-level validation without a battery, and requires ≥4.7 µF output capacitance for loads >250 mA.

MCP73833-GPI/UN Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)

Packaging:: Tube

Product Status:: Active

Battery Chemistry:: Lithium Ion/Polymer

Number of Cells:: 1

Current - Charging:: Constant - Programmable

Programmable Features:: Current

Fault Protection:: Over Temperature

Charge Current - Max:: 1.1A

Battery Pack Voltage:: 4.2V

Voltage - Supply (Max):: 6V

Interface:: -

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 10-MSOP

MCP73833-GPI/UN FAQ

1.How can I place an order for MCP73833-GPI/UN through Aetrix?

Please submit a Request for Quotation (RFQ) for MCP73833-GPI/UN on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for MCP73833-GPI/UN reliable?

The price and inventory of MCP73833-GPI/UN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP73833-GPI/UN is usually 5 days.

3.What payment methods are accepted for MCP73833-GPI/UN?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP73833-GPI/UN transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MCP73833-GPI/UN?

MCP73833-GPI/UN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MCP73833-GPI/UN order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for MCP73833-GPI/UN?

For technical support, including MCP73833-GPI/UN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP73833-GPI/UN requirements.

6.How does Aetrix verify that MCP73833-GPI/UN is sourced from the original manufacturer or authorized distributors?

All MCP73833-GPI/UN products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MCP73833-GPI/UN meets industry standards.

7.What is the process for return or replacement of MCP73833-GPI/UN?

All MCP73833-GPI/UN units undergo pre-shipment inspection (PSI). If there is an issue with MCP73833-GPI/UN, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The MCP73833-GPI/UN part is unused and in its original packaging.

Return procedure for MCP73833-GPI/UN:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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