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Analog Devices Inc. ADM8830ARUZ
- Part No.:
- ADM8830ARUZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Special Purpose Regulators
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ADM8830ARUZ.pdf
- Description:
- IC REG CONV TFT LCD 3OUT 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,494
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Product details
Overview
ADM8830ARUZ from Analog Devices is a triple-output CMOS charge pump regulator designed specifically for color TFT LCD panels in mobile phones and handheld instruments. It generates +5.1 V (±2%), +15.3 V, and –10.2 V from a single 2.6–3.6 V input, supports scanning/blanking mode switching with external clock control, and delivers fast 5 µs transient response on the 5.1 V output under 10 µA–8 mA load steps.
For engineers reviewing the ADM8830ARUZ datasheet, ADM8830ARUZ pinout, ADM8830ARUZ application, or ADM8830ARUZ equivalent, key selection criteria include its three-rail voltage generation capability, Green Idle™ oscillator enable scheme for power efficiency in blanking mode, internal LDO regulation of the 5.1 V rail, and support for external clock-driven low-current operation at 1 kHz.
Technical Context
The ADM8830ARUZ integrates a voltage doubler (for +5.1 V), tripler (for +15.3 V), and inverter (for –10.2 V) driven by a dual-mode timing generator: internal 100 kHz oscillator during scanning mode and external 1 kHz clock during blanking mode. Its control logic includes SCAN/BLANK, SHDN, and LDO_ON/OFF pins to manage sequencing, shutdown discharge, and internal/external LDO selection.
Power sequencing is hardware-enforced: –10.2 V ramps first, then +15.3 V enables only after –10.2 V reaches –3 V; +5.1 V rises independently with 300 µs rise time. The device uses discrete external capacitors (C1–C9) - no inductors - and features ±1 µA digital input current across all control pins with 10 pF input capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.6 V to 3.6 V - compatible with single-cell Li-ion or Li-poly battery systems without pre-regulation. |
| +5.1 V Output Accuracy | ±2% (5.0 V to 5.2 V) at 10 µA–8 mA load - ensures stable LCD controller supply within display IC tolerance bands. |
| +15.3 V Output Range | 14.4 V to 15.6 V at 1 µA–100 µA - sufficient headroom for TFT gate drive requiring ≥14.5 V. |
| –10.2 V Output Range | –10.4 V to –9.6 V at –1 µA to –100 µA - meets negative bias requirements for common-source TFT configurations. |
| Quiescent Current (Blanking) | 70–140 µA - enables >100-hour standby in always-on display applications with minimal battery drain. |
| Shutdown Current | <1 µA - allows full system sleep with negligible leakage when display is off. |
| Transient Response | 5 µs settling time - maintains <1% output deviation during dynamic pixel updates in video playback. |
Pinout & Package
ADM8830ARUZ is packaged in a 20-lead TSSOP (RU-20) with 0.65 mm pitch, 6.5 mm × 4.4 mm body, and exposed thermal pad for enhanced thermal performance (θJA = 72°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 3) | Positive Supply Input | Connects directly to 2.6–3.6 V battery rail; requires 2.2 µF decoupling capacitor for stable charge pump operation. |
| +5VOUT (Pin 4) | +5.1 V Regulated Output | Primary supply for LCD controller IC; stabilized by internal LDO and requires 2.2 µF output capacitor. |
| +5VIN (Pin 5) | +5.1 V Input to Pump Circuits | Feeds tripler and inverter stages; must be sourced from internal LDO or external LDO selected via LDO_ON/OFF. |
| LDO_ON/OFF (Pin 6) | LDO Selection Control | Logic high enables internal LDO; logic low isolates it to allow external LDO regulation of +5.1 V rail. |
| SHDN (Pin 7) | Active-Low Shutdown | Pulls all outputs to GND via internal discharge circuit; reduces supply current to <1 µA in shutdown mode. |
| SCAN/BLANK (Pin 8) | Mode Selection Input | High = scanning mode (internal 100 kHz oscillator); low = blanking mode (external 1 kHz clock) for power savings. |
| CLKIN (Pin 9) | External Clock Input | Accepts 0.9–1.1 kHz square wave with 50% duty cycle and <20 ns edge rates for blanking-mode timing. |
| +15VOUT (Pin 10) | +15.3 V Tripler Output | Supplies positive TFT gate drivers; requires 1 µF output capacitor and ramps after –10.2 V per hardware sequencing. |
| –10VOUT (Pin 17) | –10.2 V Inverter Output | Supplies negative TFT gate drivers; ramps first during power-up to ensure correct panel bias sequence. |
| GND (Pin 20) | Device Ground Reference | Common return for all supplies and logic; must be connected to low-impedance PCB ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Triple-Rail Charge Pump Architecture | Generates +5.1 V, +15.3 V, and –10.2 V simultaneously from one 3 V input - eliminates need for multiple DC/DC converters or inductors. |
| Green Idle™ Oscillator Enable | Dynamically activates charge pump only when load current demand exceeds threshold - reduces quiescent current by >50% during low-load blanking periods. |
| Hardware-Controlled Power Sequencing | Enforces –10.2 V ramp before +15.3 V enable - prevents TFT panel latch-up and ensures reliable startup without external sequencing ICs. |
| Fast 5 µs Transient Response | Maintains <1% output deviation during 10 µA ↔ 8 mA load steps - critical for flicker-free video rendering on active-matrix displays. |
| External LDO Bypass Capability | LDO_ON/OFF pin allows substitution of higher-efficiency or lower-noise external LDO - supports design flexibility for noise-sensitive display interfaces. |
Applications
| Mobile Phone Display Power | Handheld Instrument TFT Bias |
|---|---|
Use Scenario: Powering color TFT LCD in GSM/UMTS smartphones with dynamic screen content and extended battery life requirements. IC Role / Device Role / Timing Role: Generates all three bias rails (+5.1 V for controller, +15.3 V/–10.2 V for gate drivers) while switching between scanning (video) and blanking (static image) modes. Use Value: Reduces total solution size by eliminating inductors and secondary regulators; extends talk time via 70 µA blanking-mode quiescent current. | Use Scenario: Supplying precision bias voltages for industrial handheld test equipment with high-resolution TFT displays operating in variable ambient temperatures. IC Role / Device Role / Timing Role: Provides temperature-stable ±2% +5.1 V output and sequenced ±10% high-voltage rails under –40°C to +85°C conditions. Use Value: Ensures display contrast consistency across temperature range; eliminates need for external voltage monitoring or sequencing logic. |
| TFT LCD Evaluation Platform | Low-Power Portable Medical Display |
Use Scenario: Reference design for TFT LCD interface modules used in embedded development kits and FPGA-based display controllers. IC Role / Device Role / Timing Role: Delivers configurable +5.1 V regulation (internal/external LDO) and programmable blanking-mode clocking via CLKIN pin. Use Value: Accelerates bring-up with validated capacitor values (C1–C9) and timing diagrams; supports rapid prototyping of display power architecture. | Use Scenario: Powering diagnostic-grade TFT displays in portable ultrasound or ECG devices where EMI and battery runtime are critical. IC Role / Device Role / Timing Role: Supplies ultra-low-noise +5.1 V rail (10 mVp-p ripple) and isolated high-voltage rails with controlled power-down sequencing. Use Value: Prevents display artifacts during patient data acquisition; meets IEC 60601-1 leakage current limits via sub-1 µA shutdown current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar charge pump regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1605EEE+ | Single +5 V output only; no ±15 V/–10 V generation; uses different capacitor topology and lacks SCAN/BLANK mode control. | Suitable only for LCD controllers requiring +5 V only - cannot replace ADM8830ARUZ in full TFT bias applications. | Select MAX1605EEE+ only if display panel uses external high-voltage generators or requires simpler single-rail regulation. |
| TPS65105RGER | Integrated +5 V LDO, +15 V tripler, and –10 V inverter; supports 1.8–5.5 V input; includes I²C interface for programmable output adjustment. | Offers digital configurability and wider input range but requires firmware integration and has larger 24-pin QFN package. | Choose TPS65105RGER when system-level flexibility (e.g., dynamic voltage scaling) and future-proofing outweigh cost and layout simplicity. |
Compared with MAX1605EEE+ and TPS65105RGER, the ADM8830ARUZ provides fixed-rail, pin-strapped operation optimized for minimal BOM count and lowest quiescent current in blanking mode - making it ideal for cost-sensitive, battery-constrained TFT displays where analog control suffices.
Availability
ADM8830ARUZ is available at Aetrix Electronics and suitable for mobile phone display power, handheld instrument TFT bias, and low-power portable medical display applications requiring stable component supply and long-term lifecycle support.
Supply support for ADM8830ARUZ 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and consumer markets since 1965.
The ADM8830ARUZ belongs to Analog Devices' TFT LCD power management product line, engineered specifically to replace discrete charge pump solutions in space-constrained, battery-powered color display systems.
FAQ
What is the function of the SCAN/BLANK pin on the ADM8830ARUZ?
The SCAN/BLANK pin on the ADM8830ARUZ selects operational mode: logic high enables scanning mode with internal 100 kHz oscillator for high-current display updates; logic low activates blanking mode, disabling the internal oscillator and routing timing to the CLKIN pin for low-frequency (1 kHz) operation. This dual-mode control reduces quiescent current from 150–400 µA to 70–140 µA, extending battery life during static display periods. The ADM8830ARUZ uses this pin to automatically adapt power delivery to real-time display activity without software intervention.
Can the ADM8830ARUZ operate without an external clock source?
Yes, the ADM8830ARUZ operates fully autonomously in scanning mode using its internal 100 kHz oscillator - no external clock required. However, in blanking mode, the device mandates an external 1 kHz clock applied to the CLKIN pin; the internal oscillator is disabled during blanking to minimize power consumption. If no external clock is provided while SCAN/BLANK is low, the +15.3 V and –10.2 V outputs will not regulate correctly. The ADM8830ARUZ thus requires either internal oscillator use (scanning) or external clock provision (blanking), but never both simultaneously.
How does the ADM8830ARUZ ensure correct power-up sequencing for TFT panels?
The ADM8830ARUZ enforces hardware-based power sequencing: the –10.2 V output ramps first, and the +15.3 V output remains disabled until –10.2 V reaches –3 V. Only then does +15.3 V begin ramping, while +5.1 V rises independently with 300 µs rise time. This sequence prevents TFT panel damage caused by incorrect gate driver biasing. The ADM8830ARUZ implements this entirely in analog logic - no external components or firmware are needed. Measured delays (e.g., 3 ms between –10 V fall and +15 V rise) are guaranteed by design and verified across –40°C to +85°C.
What external components are required for basic operation of the ADM8830ARUZ?
The ADM8830ARUZ requires nine external capacitors: C1 and C5–C7 (2.2 µF each) for the +5.1 V doubler/LDO stage; C2, C3, C4, C8, and C9 (1 µF each) for the +15.3 V tripler and –10.2 V inverter stages. No inductors, resistors, or diodes are needed. All capacitors must be ceramic X5R/X7R with ≤100 mΩ ESR. The ADM8830ARUZ datasheet specifies exact values and placement - e.g., C1 between C1+ (Pin 1) and C1– (Pin 19) - and deviations risk instability or reduced efficiency.
Is the ADM8830ARUZ pin-compatible with other Analog Devices TFT power ICs?
No, the ADM8830ARUZ is not pin-compatible with other Analog Devices TFT power ICs such as the ADM8829 or ADM8831. Its 20-pin TSSOP (RU-20) pinout is unique: Pin 4 is +5VOUT, Pin 5 is +5VIN, Pin 10 is +15VOUT, and Pin 17 is –10VOUT - a layout distinct from the 16-pin SOIC of ADM8829 or the 24-pin QFN of ADM8831. Signal assignments (e.g., LDO_ON/OFF on Pin 6, SCAN/BLANK on Pin 8) do not align across families. Migration requires PCB redesign. The ADM8830ARUZ was designed as a standalone solution for specific mobile phone display architectures and has no drop-in replacements within Analog Devices' portfolio.
ADM8830ARUZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Applications:
- Converter, TFT LCD
- Voltage - Input:
- 2.6V ~ 3.6V
- Number of Outputs:
- 3
- Voltage - Output:
- -10.2V, 5.1V, 15.3V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
ADM8830ARUZ FAQ
1.How can I place an order for ADM8830ARUZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM8830ARUZ 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 ADM8830ARUZ reliable?
The price and inventory of ADM8830ARUZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM8830ARUZ is usually 5 days.
3.What payment methods are accepted for ADM8830ARUZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM8830ARUZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM8830ARUZ?
ADM8830ARUZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM8830ARUZ 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 ADM8830ARUZ?
For technical support, including ADM8830ARUZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM8830ARUZ requirements.
6.How does Aetrix verify that ADM8830ARUZ is sourced from the original manufacturer or authorized distributors?
All ADM8830ARUZ 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 ADM8830ARUZ meets industry standards.
7.What is the process for return or replacement of ADM8830ARUZ?
All ADM8830ARUZ units undergo pre-shipment inspection (PSI). If there is an issue with ADM8830ARUZ, 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 ADM8830ARUZ part is unused and in its original packaging.
Return procedure for ADM8830ARUZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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