Renesas UPD168102K9-5B4-A

Overview

UPD168102K9-5B4-A from Renesas Electronics is a monolithic 6-channel H-bridge motor driver IC with CMOS controller and MOS output stage, delivering ±0.2 A DC per channel (ch 1–4) and ±0.4 A DC per channel (ch 5–6), 1.5 Ω typical on-resistance (ch 1–4), and 1.0 Ω typical on-resistance (ch 5–6), optimized for digital still camera motor control requiring compact size and low-voltage operation down to 2.5 V.

For engineers reviewing the UPD168102K9-5B4-A datasheet, UPD168102K9-5B4-A pinout, UPD168102K9-5B4-A application, or UPD168102K9-5B4-A equivalent, key selection considerations include its dual-mode drive capability (voltage drive on ch 1–4, constant-current chopping on ch 5–6), integrated overheat/UVLO protection, 48-pin WQFN (7 mm × 7 mm) package, and compatibility with 3 V systems in space-constrained imaging modules.

Technical Context

The UPD168102K9-5B4-A integrates six independent H-bridge circuits using P-channel MOSFETs in the high-side and N-channel in the low-side, eliminating need for an on-chip charge pump. Its control logic supports 100 kHz input frequency and features dedicated current-sense comparator inputs (ISEN5/ISEN6) with external reference (CL5/CL6) for precise chopper regulation on channels 5 and 6.

It implements a dual power domain architecture: VDD (2.5–5.5 V) powers the CMOS control block, while VM (2.7–5.5 V) supplies the motor output stages. The BRKsel pin enables selectable brake regeneration (≈1 ms internal timer) or Hi-Z standby mode, and the VIsel pin configures ch 5–6 between voltage drive and constant-current chopping operation.

Key Specifications

Pinout & Package

The UPD168102K9-5B4-A is housed in a 48-pin plastic WQFN (7 mm × 7 mm) with exposed thermal pad (P48K9-50-5B4). Pin pitch is 0.5 mm; package height ≤ 0.8 mm. Thermal resistance θ_JA = 125°C/W on 100 mm × 100 mm × 1 mm glass epoxy board (15% copper).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 6-channel H-bridge motor driver applications.

Compared with TB6612FNG and DRV8833, the UPD168102K9-5B4-A uniquely delivers six integrated H-bridges with configurable current-chop capability on two channels, enabling single-chip dual-stepper or multi-actuator control in imaging modules without external sensing components or channel expansion.

Availability

UPD168102K9-5B4-A is available at Aetrix Electronics and suitable for digital still cameras, portable medical imaging probes, and compact industrial positioning stages requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.

Supply support for UPD168102K9-5B4-A 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

Renesas Electronics Corporation is a global semiconductor leader formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, power, and motor control solutions.

The µPD168102 product line was designed specifically for high-density, low-voltage motor control in consumer imaging equipment, emphasizing minimal board footprint, low quiescent power, and integrated protection for reliability in battery-operated devices.

FAQ

What is the maximum continuous output current per channel for UPD168102K9-5B4-A?

The UPD168102K9-5B4-A supports ±0.2 A DC per channel for channels 1–4 and ±0.4 A DC per channel for channels 5–6 under recommended operating conditions (TA = 25°C, VM = 3 V). These values reflect sustained current capability before thermal derating applies; instantaneous pulse current up to ±0.6 A (ch 1–4) and ±1.0 A (ch 5–6) is allowed for ≤10 ms at ≤20% duty cycle.

Does UPD168102K9-5B4-A require an external charge pump circuit?

No, the UPD168102K9-5B4-A does not require an external charge pump. Its output stage uses P-channel MOSFETs for the high-side switches, enabling full rail-to-rail drive from the VM supply without needing a boosted gate voltage. This architecture reduces both component count and quiescent current consumption compared to bipolar or N-channel-only H-bridge drivers.

How does the VIsel pin affect the operation of UPD168102K9-5B4-A?

The VIsel pin on the UPD168102K9-5B4-A selects the drive mode for channels 5 and 6: when VIsel = High, those channels operate in constant-current chopping mode using ISEN5/ISEN6 and CL5/CL6 inputs; when VIsel = Low, they function identically to channels 1–4 in standard voltage-drive mode. This allows flexible configuration for mixed-load applications within a single IC.

What thermal protection features are built into UPD168102K9-5B4-A?

The UPD168102K9-5B4-A includes an on-chip overheat protection circuit that triggers at junction temperature >150°C, forcing all outputs into high-impedance state until temperature falls below the hysteresis threshold. Additionally, a low-voltage malfunction prevention circuit disables internal operation when VDD drops below 2.5 V, preventing undefined logic states during brownout conditions.

Can UPD168102K9-5B4-A drive stepper motors directly?

Yes, the UPD168102K9-5B4-A can drive stepper motors directly. Its six independent H-bridges support full-step or half-step excitation of two bipolar stepper motors (e.g., ch 1–4 for motor A, ch 5–6 for motor B). When configured in current-chop mode (VIsel = High), channels 5–6 provide regulated current for smoother microstepping and consistent torque across varying supply voltages.