Analog Devices Inc. ADM8830ACPZ-REEL7

Overview

ADM8830ACPZ-REEL7 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 ADM8830ACPZ-REEL7 datasheet, ADM8830ACPZ-REEL7 pinout, ADM8830ACPZ-REEL7 application, or ADM8830ACPZ-REEL7 equivalent, key selection criteria include its Green Idle™ oscillator enable scheme, power sequencing control (–10 V before +15 V), LDO_ON/OFF configurable internal/external regulation, and 20-lead LFCSP package thermal performance (θ_JA = 31°C/W).

Technical Context

The ADM8830ACPZ-REEL7 integrates a voltage doubler (for +5.1 V), tripler (for +15.3 V), and inverter (for –10.2 V), all 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 manages power sequencing-enabling –10 V first, then +15 V after –3 V threshold-and supports shutdown discharge via SHDN pin.

It features three digital control inputs (SCAN/BLANK, SHDN, LDO_ON/OFF) with 3 V CMOS logic thresholds (0.3 V_CC/0.7 V_CC), ±1 µA input current, and 10 pF input capacitance. The LDO section regulates the 5.1 V output with 10 mV_p-p ripple at 8 mA load and maintains 80% efficiency at 5 mA scanning load (V_CC = 3 V).

Key Specifications

Pinout & Package

The ADM8830ACPZ-REEL7 is packaged in a 20-lead Lead Frame Chip Scale Package (LFCSP), 4 mm × 4 mm body, with 0.65 mm pitch and coplanarity ≤ 0.08 mm (JEDEC MO-220-VGGD-1 compliant). Thermal resistance θ_JA = 31°C/W enables high-power-density integration in space-constrained mobile PCBs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar charge pump regulator applications.

Compared with MAX1605EEE+ and TPS65120RGTR, the ADM8830ACPZ-REEL7 uniquely combines triple-rail generation, programmable blanking-mode clocking, and sub-1 µA shutdown-making it the only option optimized for battery-critical, small-form-factor color TFTs requiring full bias sequencing.

Availability

ADM8830ACPZ-REEL7 is available at Aetrix Electronics and suitable for mobile phone display power, handheld instrument LCD bias, and portable TFT evaluation platforms requiring stable component supply across extended temperature ranges (–40°C to +85°C) and long production lifecycles.

Supply support for ADM8830ACPZ-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.

The ADM8830ACPZ-REEL7 belongs to Analog Devices' TFT LCD power management product line, engineered specifically to replace multi-IC bias solutions in space- and power-constrained mobile displays.

FAQ

What is the function of the SCAN/BLANK pin on the ADM8830ACPZ-REEL7?

The SCAN/BLANK pin on the ADM8830ACPZ-REEL7 selects operating mode: logic high enables scanning mode with internal 100 kHz oscillator for high-current display updates; logic low enables blanking mode, switching to external 1 kHz clock to reduce quiescent current to 70–140 µA. This dual-mode control directly extends battery life during static display periods without compromising transient response when content changes.

Does the ADM8830ACPZ-REEL7 require external capacitors, and what values are specified?

Yes, the ADM8830ACPZ-REEL7 requires nine external ceramic capacitors: C1, C5, C6, C7 = 2.2 µF (for VCC decoupling and +5.1 V stabilization); C2, C3, C4, C8, C9 = 1 µF (for +15.3 V, –10.2 V, and internal charge pump stages). These values are validated in the datasheet for stable operation across –40°C to +85°C and ensure specified ripple (10 mV_p-p) and transient response (5 µs) on the +5.1 V output.

How does the ADM8830ACPZ-REEL7 handle power sequencing between its –10.2 V and +15.3 V outputs?

The ADM8830ACPZ-REEL7 enforces strict power sequencing: upon startup, –10.2 V ramps first and must reach –3 V before +15.3 V is enabled. This prevents TFT panel damage by ensuring negative gate bias is established before positive gate drive is applied. The delay between –10 V fall and +15 V rise is 3 ms, and timing is internally managed-no external sequencing circuitry is required.

Can the ADM8830ACPZ-REEL7 operate without the internal LDO, and how is that configured?

Yes, the ADM8830ACPZ-REEL7 can bypass its internal LDO using the LDO_ON/OFF pin: applying logic low disables the internal regulator, allowing an external LDO to condition the +5.1 V doubler output before feeding it into the +15.3 V and –10.2 V charge pump stages. This configuration improves PSRR or reduces noise when system-level filtering is needed beyond the internal LDO's capabilities.

What is the thermal performance difference between the ADM8830ACPZ-REEL7 and the TSSOP-packaged ADM8830ARU-REEL7?

The ADM8830ACPZ-REEL7 in 20-lead LFCSP has θ_JA = 31°C/W, while the TSSOP-packaged ADM8830ARU-REEL7 has θ_JA = 72°C/W. Under identical 3.6 V scanning-mode load conditions, the LFCSP version runs ~40°C cooler-critical for thermally dense mobile PCBs. This difference stems from the LFCSP's exposed thermal pad and shorter internal bond wire paths, directly improving reliability and sustained output current capability.