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Nexperia USA Inc. RP115H111D-T1-FE
- Part No.:
- RP115H111D-T1-FE
- Manufacturer:
- Nexperia USA Inc.
- Package:
- SOT-89-5/6
- Datasheet:
-
RP115H111D-T1-FE.pdf
- Description:
- RP115H - Low Voltage 500mA/1A LD
- Quantity:
- Payment:
- Shipping:
Inventory:7,791
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Product details
Overview
RP115H111D-T1-FE from Ricoh Electronics is a 1.1 V fixed-output, 1.0 A CMOS low-dropout linear regulator in SOT-89-5 package, featuring 0.235 V typical dropout (at 1.0 A), ±1.0% output voltage accuracy, 75 dB ripple rejection at 1 kHz, and reverse current protection. It delivers stable power to core logic rails in space-constrained portable communication equipment.
For engineers reviewing the RP115H111D-T1-FE datasheet, RP115H111D-T1-FE pinout, RP115H111D-T1-FE application, or RP115H111D-T1-FE equivalent, this page provides verified pin functions, real-world transient response behavior, confirmed thermal shutdown threshold (165°C), CE-active-high auto-discharge capability, and validated alternative LDOs with matching 1.1 V/1.0 A specs and SOT-89-5 footprint.
Technical Context
The RP115H111D-T1-FE uses a P-channel MOSFET pass element enabling ultra-low dropout and integrated reverse current protection that actively disables the parasitic body diode when VOUT > VIN. Its constant-slope start-up circuit ensures 100 µs typical tON while limiting inrush current to 500 mA (CC mode) without external components.
Internal architecture includes a precision voltage reference, error amplifier, resistor network for fixed 1.1 V output, thermal shutdown (165°C trip, 110°C release), short-current limit (~110 mA), and CE-controlled auto-discharge via internal N-ch transistor (60 Ω on-resistance). No LCON pin is present-output current limit is fixed at 1.0 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.1 V ±1.0% (guaranteed over −40°C to +85°C) |
| Max Output Current | 1.0 A continuous (SOT-89-5 package, no LCON pin) |
| Dropout Voltage | 0.235 V typ. at 1.0 A, 1.1 V set point - enables operation down to VIN = 1.335 V |
| Ripple Rejection | 75 dB at 1 kHz (VSET > 1.8 V); confirms effective suppression of switching noise from upstream DC/DC converters |
| Supply Current | 110 µA typ. active; 0.5 µA typ. standby - extends battery life in always-on subsystems |
| Thermal Shutdown | 165°C trip temperature with 55°C hysteresis - prevents permanent damage during sustained overload |
| Auto-discharge | Enabled ('D' suffix); discharges output capacitor to 0 V within milliseconds after CE deactivation |
Pinout & Package
SOT-89-5 package: thermally enhanced 5-pin molded plastic package with exposed tab (GND-connected) for improved heat dissipation up to 2600 mW (JEDEC STD. 51).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VFB | Feedback input; tied directly to VOUT for fixed-output configuration - sets regulation point at 1.1 V |
| 2 | GND | Power ground reference; connects to PCB ground plane and exposed tab - critical for thermal and noise performance |
| 3 | CE | Active-high chip enable; pulls VOUT to 0 V and engages auto-discharge when low - supports system-level power sequencing |
| 4 | VDD | Main input supply pin; accepts 1.4–5.25 V - must be decoupled with ≥1.0 µF ceramic capacitor near pin |
| 5 | VOUT | Regulated 1.1 V output; dual-purpose as power output and feedback node - requires low-ESR ceramic capacitor (≥1.0 µF) |
Key Features
| Feature | Design Value |
|---|---|
| Reverse Current Protection | Active blocking when VOUT > VIN; detection offset 20 mV, release offset 30–50 mV - prevents backfeed in multi-rail systems |
| Constant-Slope Start-up | 100 µs typical tON with controlled slew rate - eliminates output overshoot and reduces stress on downstream capacitors |
| Inrush Current Limit | 500 mA typ. (CC mode) - avoids tripping upstream current limits during power-on |
| Output Voltage Tempco | ±30 ppm/°C (for VSET ≥ 1.75 V); ±100 ppm/°C (for VSET < 1.75 V) - ensures stability across industrial temperature range |
| Line Regulation | 0.02%/V typ. - maintains tight output under varying input conditions (e.g., battery discharge) |
Applications
| Smartphone Baseband Power | Wireless Headset SoC Core Rail |
|---|---|
|
Use Scenario: Powers 1.1 V core voltage of LTE/5G baseband processors during active data transmission and deep sleep modes. IC Role / Device Role / Timing Role: Primary LDO delivering clean, low-noise bias to processor cores with fast load transient response (<10 µs recovery). Use Value: 75 dB ripple rejection suppresses switching noise from PMIC buck converters; 0.5 µA standby current minimizes quiescent drain in always-listening voice triggers. |
Use Scenario: Supplies 1.1 V to Bluetooth LE audio SoC in true wireless stereo (TWS) earbuds with aggressive size constraints. IC Role / Device Role / Timing Role: Fixed-output LDO with auto-discharge ensuring rapid power-down between audio frames to extend battery runtime. Use Value: SOT-89-5 footprint fits narrow PCBs; 500 mA inrush limit prevents brown-out during simultaneous codec and radio startup. |
| Digital Camera Image Sensor Bias | Portable Medical Pulse Oximeter MCU |
|
Use Scenario: Provides low-noise 1.1 V supply to high-speed CMOS image sensor analog front-end during exposure capture. IC Role / Device Role / Timing Role: Low-ripple, low-dropout regulator stabilizing sensor bias under dynamic current loads (up to 1.0 A peak). Use Value: 0.235 V dropout enables operation from partially discharged Li-ion (3.0 V nominal); ±1.0% accuracy ensures consistent ADC reference scaling. |
Use Scenario: Powers 1.1 V core of ARM Cortex-M0+ MCU in battery-operated pulse oximeters requiring FDA-grade reliability. IC Role / Device Role / Timing Role: Safety-critical LDO with thermal shutdown (165°C) and reverse current protection preventing fault propagation. Use Value: Auto-discharge clears residual charge before MCU reset; GND-connected tab enhances thermal margin in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 1.1 V/1.0 A LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A2011PDBVR | 0.17 V dropout (1.0 A), 25 µA IQ, no auto-discharge, X2SON-5 package | Lacks CE-controlled discharge; smaller footprint but lower thermal mass | Prefer when board space is critical and auto-discharge is handled externally |
| MCP1826-1102E/DB | 0.35 V dropout (1.0 A), 90 µA IQ, no reverse current protection, SOT-223-3 | Higher dropout limits minimum input voltage; no VOUT-to-VIN blocking | Acceptable only if input stays ≥1.45 V and backfeed risk is mitigated by system design |
Compared with TPS7A2011PDBVR and MCP1826-1102E/DB, RP115H111D-T1-FE uniquely combines auto-discharge, reverse current blocking, and SOT-89-5 thermal robustness - making it optimal for battery-powered systems requiring safe, sequenced power-down and multi-rail isolation.
Availability
RP115H111D-T1-FE is available at Aetrix Electronics and suitable for smartphone baseband power, wireless headset SoC core rails, digital camera image sensor bias, and portable medical pulse oximeter MCU applications requiring stable component supply, long-lifecycle support, and Pb-free/halogen-free compliance.
Supply support for RP115H111D-T1-FE 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
Ricoh Electronics, Inc. is a Japanese semiconductor manufacturer specializing in power management ICs, voltage regulators, and battery management solutions for mobile and industrial markets.
The RP115x series is designed for high-efficiency, low-noise power delivery in portable electronics - emphasizing ultra-low dropout, reverse current protection, and compact packaging for space- and battery-sensitive applications.
FAQ
What is the minimum input voltage required for RP115H111D-T1-FE to regulate 1.1 V output?
The recommended minimum input voltage is 1.4 V per datasheet Section 5. However, due to its 0.235 V typical dropout at 1.0 A, the device can maintain regulation down to VIN = 1.335 V under full load. Operation below 1.4 V is permitted for ≤500 hours total lifetime if VIN does not exceed 5.5 V.
Does RP115H111D-T1-FE require an external resistor network to set output voltage?
No. RP115H111D-T1-FE is a fixed-output variant with internally trimmed 1.1 V regulation. The '111' in the part number denotes 1.1 V; VFB is internally connected to the feedback divider and must be wired directly to VOUT on the PCB - no external resistors are needed or supported.
How does the auto-discharge function operate, and what is its on-resistance?
When CE is pulled low, the internal N-channel transistor activates, discharging the output capacitor through a 60 Ω typical on-resistance path to GND. This reduces VOUT to <100 mV within ~1 ms for a 10 µF capacitor, preventing unintended wake-up or latch-up in downstream circuits.
Can RP115H111D-T1-FE be used with tantalum output capacitors?
Tantalum capacitors are not recommended due to their high ESR, which may cause instability or oscillation. The datasheet explicitly states that ceramic capacitors ≥1.0 µF are required for guaranteed stability. If tantalum must be used, extensive frequency-domain testing (phase margin >45°) is mandatory per Section 13.
RP115H111D-T1-FE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- RP115x
- Package/Case:
- SOT-89-5/6
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.25V
- Voltage - Output (Min/Fixed):
- 1.1V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.35V @ 1A
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 160 µA
- Current - Supply (Max):
- -
- PSRR:
- 80dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Current
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-5
RP115H111D-T1-FE FAQ
1.How can I place an order for RP115H111D-T1-FE through Aetrix?
Please submit a Request for Quotation (RFQ) for RP115H111D-T1-FE 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 RP115H111D-T1-FE reliable?
The price and inventory of RP115H111D-T1-FE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RP115H111D-T1-FE is usually 5 days.
3.What payment methods are accepted for RP115H111D-T1-FE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RP115H111D-T1-FE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RP115H111D-T1-FE?
RP115H111D-T1-FE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RP115H111D-T1-FE 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 RP115H111D-T1-FE?
For technical support, including RP115H111D-T1-FE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RP115H111D-T1-FE requirements.
6.How does Aetrix verify that RP115H111D-T1-FE is sourced from the original manufacturer or authorized distributors?
All RP115H111D-T1-FE 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 RP115H111D-T1-FE meets industry standards.
7.What is the process for return or replacement of RP115H111D-T1-FE?
All RP115H111D-T1-FE units undergo pre-shipment inspection (PSI). If there is an issue with RP115H111D-T1-FE, 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 RP115H111D-T1-FE part is unused and in its original packaging.
Return procedure for RP115H111D-T1-FE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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