Specifications
| Type | Description |
|---|---|
| Part Number | TPS65185 |
| Manufacturer | Texas Instruments |
| Product Type | LDO Regulator |
| Category | Power Management |
| Component Type | Power_IC |
| Package / Case | 48-pin VQFN RGZ 7.00 mm x 7.00 mm; 48-pin VQFN RSL 6.00 mm x 6.00 mm with exposed thermal pad |
| Input Voltage Range | 3 V to 6 V; input supply |
| Supported Panel Size | 9.7 inches and larger; E Ink Vizplex enabled electronic paper displays |
| Positive Source Driver LDO Output | 15 V, 120 mA; TPS65185 LDO1, VPOS |
| Negative Source Driver LDO Output | -15 V, 120 mA; TPS65185 LDO2, VNEG |
| Positive Source Driver LDO Output | 15 V, 200 mA; TPS651851 LDO1, VPOS, VIN >= 3.6 V |
| Negative Source Driver LDO Output | -15 V, 200 mA; TPS651851 LDO2, VNEG, VIN >= 3.6 V |
| Output Voltage Tracking Accuracy | VPOS - VNEG = +/-50 mV; accurate output voltage tracking |
| Positive Charge Pump Output | 22 V, 15 mA; CP1, VDDH gate driver supply |
| Negative Charge Pump Output | -20 V, 15 mA; CP2, VEE gate driver supply |
| VCOM Adjustment Range | 0 V to -5.11 V; panel backplane biasing |
| VCOM Accuracy | +/-1.5% (+/-10 mV); adjustable VCOM driver |
| VCOM Control Resolution | 9-bit control, 10 mV nominal step size; through serial interface |
| Integrated Power Switch | 10 ohm, 3.3 V; for disabling system power rail to E Ink panel |
| DC-DC Boost Converter Rails | +/-16 V rails boosted to 22 V and -20 V; gate driver supply generation using boost converters and charge pumps |
| Control Interface | I2C serial interface; used to adjust output rails and VCOM |
| Active Discharge | Supported on all rails; output rail discharge function |
| Interrupt Output | Open-drain, active low; INT pin |
| Power Good Output | Open-drain output, pulled low when one or more rails are disabled or not in regulation; PWR_GOOD pin; DCDC1, DCDC2, and VCOM have no effect on this pin |
| Power-Up Control | Pull high to power up all output rails; PWRUP pin |
| Internal LDO Filter Capacitor | 4.7 uF; INT_LDO pin to ground, 2.7-V internal supply filter |
| Thermistor Interface | 10 kohm NTC thermistor and 43 kohm linearization resistor; connected between TS pin and AGND |
| VIN Input Capacitor | 10 uF; VIN pin to ground, input power supply to general circuitry |
| VIN_P Input Capacitor | 10 uF; VIN_P pin to ground, input supply to inverting buck-boost converter DCDC2 |
| VPOS Output Capacitor | 4.7 uF; VPOS pin to ground, positive supply output for panel source drivers |
| VNEG Output Capacitor | 4.7 uF; VNEG pin to ground, negative supply output for panel source drivers |
| Datasheet Status | request_only |
Product Overview
The TPS65185 is a Texas Instruments E Ink display PMIC in the Power_Management category. It is intended for E Ink Vizplex enabled electronic paper displays with panel sizes of 9.7 inches and larger, operating from a 3 V to 6 V input supply.
The device provides positive and negative source-driver LDO rails, including 15 V, 120 mA VPOS and -15 V, 120 mA VNEG for TPS65185. The related TPS651851 rail ratings are 15 V, 200 mA VPOS and -15 V, 200 mA VNEG when VIN is at least 3.6 V. Output tracking accuracy is specified as VPOS - VNEG within +/-50 mV.
Gate-driver supply generation uses boost converters and charge pumps, with +/-16 V rails boosted to 22 V and -20 V. CP1 provides 22 V at 15 mA for VDDH, and CP2 provides -20 V at 15 mA for VEE. VCOM supports 0 V to -5.11 V adjustment, +/-1.5% accuracy with +/-10 mV, and 9-bit control with 10 mV nominal steps through the I2C interface.
Package options are 48-pin VQFN RGZ, 7.00 mm x 7.00 mm, and 48-pin VQFN RSL, 6.00 mm x 6.00 mm with exposed thermal pad. External component facts include 10 uF VIN and VIN_P capacitors, 4.7 uF VPOS and VNEG capacitors, a 4.7 uF internal LDO filter capacitor, and a thermistor interface using a 10 kohm NTC thermistor with a 43 kohm linearization resistor.
Key Features
- 3 V to 6 V input supply range
- Supports 9.7-inch and larger E Ink Vizplex displays
- 15 V, 120 mA TPS65185 VPOS source-driver LDO
- -15 V, 120 mA TPS65185 VNEG source-driver LDO
- 22 V, 15 mA positive charge-pump gate-driver supply
- -20 V, 15 mA negative charge-pump gate-driver supply
- 0 V to -5.11 V adjustable VCOM range
- 9-bit VCOM control with 10 mV nominal steps
- I2C interface adjusts output rails and VCOM
- Active discharge supported on all output rails
- Open-drain active-low interrupt output
- 48-pin VQFN packages with exposed thermal pad option
Typical Applications
- E Ink electronic paper displays
- E Ink Vizplex enabled panels
- 9.7-inch and larger E Ink panels
- Electronic paper source-driver supplies
- Electronic paper gate-driver supplies
- Panel backplane VCOM biasing
- I2C-controlled display power rails
Procurement Notes
When requesting a quote for TPS65185, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For power IC and power device sourcing, voltage rating, current rating, power dissipation, package thermal performance, protection features, qualification grade and application conditions should be reviewed before approval.
FAQ
What input voltage range does the TPS65185 support?
The TPS65185 operates from a 3 V to 6 V input supply. This input range applies to the device supply used for E Ink display power management functions.
Which display panels are supported by the TPS65185?
The extracted datasheet facts specify support for E Ink Vizplex enabled electronic paper displays with panel sizes of 9.7 inches and larger.
What VCOM adjustment capability is included in the TPS65185?
The device provides panel backplane VCOM adjustment from 0 V to -5.11 V. VCOM control is through the serial interface with 9-bit control and a 10 mV nominal step size.
What package options are listed for the TPS65185?
The listed package options are 48-pin VQFN RGZ measuring 7.00 mm x 7.00 mm and 48-pin VQFN RSL measuring 6.00 mm x 6.00 mm with an exposed thermal pad.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 25, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.