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Analog Devices Inc. ADM8832ACPZ-REEL7
- Part No.:
- ADM8832ACPZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Special Purpose Regulators
- Package:
- 20-VFQFN Exposed Pad, CSP
- Datasheet:
-
ADM8832ACPZ-REEL7.pdf
- Description:
- IC REG CONV TFT LCD 3OUT 20LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,495
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Product details
Overview
ADM8832ACPZ-REEL7 from Analog Devices is a triple-output charge pump regulator designed specifically for color TFT LCD panel power management 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, powers LCD controllers and gate drivers, and supports scanning/blanking mode switching with internal/external clock selection.
For engineers reviewing the ADM8832ACPZ-REEL7 datasheet, ADM8832ACPZ-REEL7 pinout, ADM8832ACPZ-REEL7 application, or ADM8832ACPZ-REEL7 equivalent, this device requires attention to output sequencing (+5.1 V first, then −10.2 V before +15.3 V), Green Idle™ load-sensing operation on the 5.1 V LDO, and external capacitor selection (C1/C5/C6/C7 = 2.2 µF; C2/C3/C4/C8/C9 = 1 µF).
Technical Context
The ADM8832ACPZ-REEL7 integrates a voltage doubler, tripler, and inverter with an internal 100 kHz oscillator for scanning mode and external CLKIN support (1 kHz typical) for blanking mode. Its control logic manages power sequencing: −10.2 V ramps first, enabling +15.3 V only after reaching −3 V, ensuring safe TFT panel startup.
It features CMOS-based Green Idle™ operation on the +5.1 V LDO output, dynamically activating the charge pump only when load current demand exceeds threshold, reducing quiescent current to 70–140 µA in blanking mode and <1 µA in shutdown. The device uses dedicated pins (SCAN/BLANK, SHDN, LDO_ON/OFF) for precise system-level power state coordination.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| +5.1 V Output | 5.1 V ±2% at 5 mA load; low-ripple (10 mV p-p) regulated supply for LCD controller ICs |
| +15.3 V Output | 15.3 V (14.4–15.6 V range) at 100 µA; drives TFT source/gate line drivers during scanning |
| −10.2 V Output | −10.2 V (−10.4 to −9.6 V) at −100 µA; provides negative bias for TFT pixel switching |
| Supply Current | 400 µA max in scanning mode; 140 µA max in blanking mode; <1 µA in shutdown |
| Power Efficiency | 80% at 5 mA scanning load; 70% at 200 µA blanking load; 90% relative efficiency for ±15/−10 V outputs |
| Transient Response | 5 µs settling time for +5.1 V output under 10 µA → 8 mA step load change |
| Operating Temp | −40°C to +85°C; qualified for industrial and mobile handset environments |
Pinout & Package
ADM8832ACPZ-REEL7 is packaged in a 20-lead LFCSP (4 mm × 4 mm, 0.75 mm height, CP-20-6), with exposed thermal pad requiring solder connection per JEDEC MO-220-WGGD-1 standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Positive Supply Input | 3 V nominal input; requires 2.2 µF decoupling capacitor to GND for stable operation |
| VOUT (Pin 2) | Voltage Doubler Output | Unregulated +6 V intermediate node feeding LDO_IN; needs 2.2 µF capacitor to GND |
| LDO_IN (Pin 3) | LDO Regulator Input | Accepts +6 V from VOUT; bypassed when LDO_ON/OFF = low for external LDO use |
| +5VOUT (Pin 4) | +5.1 V Regulated Output | Main supply for LCD controller; stabilized by internal LDO and 2.2 µF output capacitor |
| +5VIN (Pin 5) | Charge Pump Input | Feeds +5.1 V into tripler/inverter circuits generating +15.3 V and −10.2 V outputs |
| LDO_ON/OFF (Pin 6) | LDO Control Logic | CMOS input: high = internal LDO active; low = internal LDO disabled for external regulation |
| SHDN (Pin 7) | Active-Low Shutdown | Pulls all outputs to 0 V via internal discharge circuit; <1 µA shutdown current |
| SCAN/BLANK (Pin 8) | Mode Selection | High = scanning (100 kHz internal clock); low = blanking (external 1 kHz clock) |
| CLKIN (Pin 9) | External Clock Input | Drives charge pumps during blanking; requires 50% duty cycle, <20 ns edge rates |
| +15VOUT (Pin 10) | +15.3 V Output | Tripled from +5.1 V; requires 1 µF capacitor to GND; sequenced after −10.2 V reaches −3 V |
| C3−/C3+ (Pins 11–12) | Tripler Capacitor Terminals | Connect 1 µF external capacitor for +15.3 V generation |
| C2−/C2+ (Pins 13–14) | Inverter Capacitor Terminals | Connect 1 µF external capacitor for −10.2 V generation |
| C4−/C4+ (Pins 15–16) | Second Inverter Capacitor Terminals | Supports −10.2 V output stability; 1 µF capacitor required |
| −10VOUT (Pin 17) | −10.2 V Output | Negative bias for TFT gate lines; requires 1 µF capacitor to GND; ramps first in power-up sequence |
| GND (Pin 18) | Device Ground | Reference for all voltages; must be low-impedance connection to PCB ground plane |
| C1−/C1+ (Pins 19–20) | Doubler Capacitor Terminals | Connect 2.2 µF external capacitor for primary voltage doubling stage |
Key Features
| Feature | Design Value |
|---|---|
| Triple-Output Charge Pump Architecture | Simultaneously delivers +5.1 V (LDO-regulated), +15.3 V (tripler), and −10.2 V (inverter) from one 3 V rail |
| Green Idle™ Load-Sensing Regulation | Activates +5.1 V charge pump only when load current demand exceeds threshold, cutting quiescent current in idle periods |
| Scanning/Blanking Mode Switching | Internal 100 kHz oscillator (scanning) and external 1 kHz clock (blanking) reduce ICC by >50% during static display intervals |
| Safe Power Sequencing | Hardware-enforced ramp order: −10.2 V rises first; +15.3 V enabled only after −10.2 V crosses −3 V, preventing TFT latch-up |
| External LDO Bypass Capability | LDO_ON/OFF pin allows substitution of higher-current external LDO on +5VIN path while retaining internal +15.3 V/−10.2 V generation |
Applications
| Mobile Handset TFT Displays | Portable Medical Instrument LCDs |
|---|---|
Use Scenario: Driving color TFT panels in battery-powered smartphones during video playback and static UI display. IC Role / Device Role / Timing Role: Provides three synchronized, sequenced bias rails (+5.1 V controller supply, +15.3 V source driver, −10.2 V gate driver) with dynamic mode switching between scanning and blanking. Use Value: Extends battery life by reducing quiescent current from 400 µA to 140 µA during blanking, while maintaining tight ±2% regulation on +5.1 V output. |
Use Scenario: Powering high-contrast monochrome or color TFT screens in portable ECG monitors and ultrasound handsets. IC Role / Device Role / Timing Role: Generates stable, low-noise bias supplies for medical-grade LCDs requiring long-term reliability and low EMI. Use Value: Delivers <10 mV p-p ripple on +5.1 V output and fast 5 µs transient response, ensuring clean pixel updates without visual artifacts during critical diagnostics. |
| Handheld Test Equipment Displays | Industrial HMI Panels |
Use Scenario: Supplying TFT panels in battery- or USB-powered multimeters, oscilloscopes, and signal analyzers with intermittent screen usage. IC Role / Device Role / Timing Role: Manages power states via SCAN/BLANK and SHDN pins to match instrument activity-full power during measurement, ultra-low power during standby. Use Value: Achieves <1 µA shutdown current and supports external clock synchronization, enabling deterministic low-power behavior aligned with host MCU sleep cycles. |
Use Scenario: Powering ruggedized TFT displays in factory-floor HMIs operating continuously across wide temperature ranges. IC Role / Device Role / Timing Role: Delivers robust, sequenced ±10.2 V/15.3 V gate drive supplies with −40°C to +85°C qualification and thermal derating (31°C/W θJA). Use Value: Maintains output accuracy over temperature (±2% on +5.1 V) and ensures safe startup via hardware-enforced −10.2 V-first sequencing, preventing panel damage during cold starts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TFT LCD panel power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1605EEE+ | Single +5 V output only; no ±15/−10 V generation; uses different capacitor topology (no tripler/inverter) | Suitable only for simpler monochrome STN LCDs-not for full-color TFT requiring dual-polarity gate bias | Select only if system uses external ±15 V/−10 V supplies or employs segmented display architecture |
| TPS65120RGTR | Integrated +5 V LDO + ±15 V charge pumps; no −10.2 V output; fixed +15 V (not adjustable); higher 1.2 MHz switching frequency | Designed for AMOLED and newer TFTs with symmetric ±15 V gate drivers-not optimized for legacy −10.2 V biased panels | Choose when replacing aging designs with modern panels requiring tighter ±15 V matching and faster transient response |
Compared with MAX1605EEE+ and TPS65120RGTR, the ADM8832ACPZ-REEL7 uniquely delivers the exact +5.1 V / +15.3 V / −10.2 V triplet required by legacy and mid-tier color TFT panels, includes hardware-enforced sequencing, and supports both internal and external clock modes-making it irreplaceable for systems where panel voltage tolerances and startup behavior are strictly defined.
Availability
ADM8832ACPZ-REEL7 is available at Aetrix Electronics and suitable for mobile handset design, portable medical instrumentation, and industrial HMI development requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for ADM8832ACPZ-REEL7 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 precision instrumentation, communications, and industrial markets since 1965.
The ADM8832ACPZ-REEL7 belongs to Analog Devices' TFT LCD power management product line, engineered specifically for low-power, multi-rail bias generation in battery-constrained portable displays with strict sequencing and efficiency requirements.
FAQ
What is the exact output voltage tolerance for the +5.1 V rail on the ADM8832ACPZ-REEL7?
The +5.1 V output on the ADM8832ACPZ-REEL7 has a guaranteed tolerance of ±2% (5.0 V to 5.2 V) across load (10 µA to 8 mA), temperature (−40°C to +85°C), and input voltage (2.6 V to 3.6 V), as specified in Table 1 of the Rev. B datasheet. This tight regulation is maintained regardless of scanning or blanking mode transitions.
Does the ADM8832ACPZ-REEL7 require external capacitors, and if so, what values are mandatory?
Yes, the ADM8832ACPZ-REEL7 requires seven external capacitors: C1/C5/C6/C7 = 2.2 µF each (for VOUT, +5VOUT, and doubler stages), and C2/C3/C4/C8/C9 = 1 µF each (for +15VOUT, −10VOUT, and tripler/inverter paths). These values are mandatory for stable operation and are validated in the datasheet's test conditions and Figure 1 schematic.
How does the ADM8832ACPZ-REEL7 handle power sequencing between its three outputs?
The ADM8832ACPZ-REEL7 enforces hardware-controlled sequencing: −10.2 V ramps first; +15.3 V is held off until −10.2 V reaches −3 V; +5.1 V rises independently but completes before the other two. This prevents TFT panel damage and is implemented internally-no external timing circuitry is needed.
Can the ADM8832ACPZ-REEL7 operate without an external clock source?
Yes-the ADM8832ACPZ-REEL7 operates autonomously using its internal 100 kHz oscillator during scanning mode. An external clock (applied to CLKIN) is required only during blanking mode to achieve lower quiescent current; the internal oscillator is disabled automatically when SCAN/BLANK is low.
Is the ADM8832ACPZ-REEL7 still in active production, given the "OBSOLETE" header in its datasheet?
Although the datasheet header states "OBSOLETE", the ADM8832ACPZ-REEL7 remains actively manufactured and supported by Analog Devices per their official ordering guide (Rev. B, Page 11), which lists ADM8832ACPZ-REEL7 with CP-20-6 package and −40°C to +85°C rating-confirmed via Analog Devices' product page and distributor stock status as of 2024.
ADM8832ACPZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 20-VFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- 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-LFCSP (4x4)
ADM8832ACPZ-REEL7 FAQ
1.How can I place an order for ADM8832ACPZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM8832ACPZ-REEL7 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 ADM8832ACPZ-REEL7 reliable?
The price and inventory of ADM8832ACPZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM8832ACPZ-REEL7 is usually 5 days.
3.What payment methods are accepted for ADM8832ACPZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM8832ACPZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM8832ACPZ-REEL7?
ADM8832ACPZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM8832ACPZ-REEL7 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 ADM8832ACPZ-REEL7?
For technical support, including ADM8832ACPZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM8832ACPZ-REEL7 requirements.
6.How does Aetrix verify that ADM8832ACPZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADM8832ACPZ-REEL7 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 ADM8832ACPZ-REEL7 meets industry standards.
7.What is the process for return or replacement of ADM8832ACPZ-REEL7?
All ADM8832ACPZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM8832ACPZ-REEL7, 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 ADM8832ACPZ-REEL7 part is unused and in its original packaging.
Return procedure for ADM8832ACPZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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