Monolithic Power Systems Inc. MP6513GJ-P

Overview

MP6513GJ-P from Monolithic Power Systems is a TSOT23-6 packaged H-bridge motor driver IC for bidirectional DC and stepper winding control, operating from 2.5V to 5.5V supply, delivering up to 0.6A output current with 500mΩ HS/LS MOSFET on-resistance, and supporting forward/reverse/coast/brake modes in compact consumer motion systems.

For engineers reviewing the MP6513GJ-P datasheet, MP6513GJ-P pinout, MP6513GJ-P application, or MP6513GJ-P equivalent, key selection criteria include its 2.5–5.5V input range, 0.6A continuous drive capability, integrated charge pump, cycle-by-cycle OCP, and thermal shutdown at 160°C - all validated in TSOT23-6 footprint for space-constrained portable devices.

Technical Context

The MP6513GJ-P integrates four N-channel power MOSFETs in an H-bridge topology with internal charge-pump gate drive enabling full logic-level operation down to 2.5V. Its dual-input control interface (IN1/IN2) directly implements forward, reverse, coast, and active brake states without external logic.

Protection architecture includes cycle-by-cycle over-current detection on both high-side and low-side paths, under-voltage lockout with 2.45V rising threshold and 200mV hysteresis, and thermal shutdown at 160°C with 25°C hysteresis - all implemented in silicon without external components.

Key Specifications

Pinout & Package

MP6513GJ-P is housed in a 6-pin TSOT23 package (2.9mm × 1.6mm × 0.85mm), optimized for automated placement and high-density PCB layouts. Pin 1 is bottom-left when viewing top marking left-to-right.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TB6612FNG and DRV8837, MP6513GJ-P uniquely balances 0.6A continuous drive, TSOT23-6 size, integrated charge pump, and deterministic OCP recovery - making it optimal for space- and battery-limited single-motor applications requiring predictable thermal and current behavior.

Availability

MP6513GJ-P is available at Aetrix Electronics and suitable for camera autofocus modules, smart toy motion control, and portable medical pumps requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MP6513GJ-P 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

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance analog and power ICs, with design centers across Asia and North America and global manufacturing partnerships.

The MP6513GJ-P belongs to MPS's motor driver product line, engineered specifically for miniaturized, battery-powered motion control where integration, efficiency, and fault resilience outweigh raw power density.

FAQ

What is the maximum continuous motor current supported by MP6513GJ-P?

The MP6513GJ-P supports 0.6A continuous output current under recommended operating conditions (T_A ≤ 85°C, proper PCB copper area). This rating assumes both high-side and low-side MOSFETs share conduction, with R_DS(ON) = 0.5Ω typical per FET. Exceeding this current risks thermal shutdown activation or accelerated wear.

Does MP6513GJ-P require external components for basic operation?

Yes - a minimum 1µF ceramic capacitor must be placed between VCC and GND near the device to stabilize the internal charge pump and suppress switching noise. No external bootstrap capacitors, current-sense resistors, or logic-level translators are needed due to integrated gate drive and internal pull-downs on IN1/IN2.

How does the brake function work, and what happens electrically?

Brake mode activates when both IN1 and IN2 are high, turning on both low-side MOSFETs simultaneously. This shorts the motor terminals through ~1Ω total path resistance (0.5Ω + 0.5Ω), rapidly dissipating kinetic energy as heat in the FETs and bringing the motor to an immediate mechanical stop.

Can MP6513GJ-P drive a bipolar stepper motor winding directly?

Yes - it drives one winding of a bipolar stepper motor by connecting OUT1 and OUT2 to the two ends of the coil. Forward/reverse inputs control current direction, enabling full-step or half-step sequencing when paired with a second identical driver for the second winding.

What is the purpose of the 200nA sleep current specification?

The 200nA sleep current occurs when both IN1 and IN2 remain low for ≥2ms, disabling all internal circuitry except the input comparators. This ultra-low quiescent state preserves battery capacity in always-connected portable devices, such as medical wearables or remote-controlled toys awaiting wake-up signals.

Is MP6513GJ-P compatible with 1.8V logic microcontrollers?

No - MP6513GJ-P requires input high voltage ≥1.75V (VIH), but its functional logic thresholds are referenced to VCC, not separate logic supply. A 1.8V MCU GPIO may not reliably assert 'high' when VCC = 2.5V (VIH = 1.75V, margin = 0.05V); use level-shifting or select VCC ≥ 3.3V for robust interfacing.

How does the cycle-by-cycle OCP respond during motor stall?

During stall, current rises rapidly through the motor winding. The OCP detects excess current on either high-side or low-side path, shuts off all four MOSFETs within 1µs, waits 0.85ms, then attempts automatic restart. If stall persists, this cycle repeats - limiting average power dissipation while preventing thermal runaway.