BTS462TATMA1 - 3.5A Smart High-Side Power Switch | Infineon
料号： BTS462TATMA1 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.18 | $2.18 |
| 10 | $1.96 | $19.60 |
| 100 | $1.74 | $174.00 |
| 500 | $1.55 | $775.00 |
| 1,000 | $1.38 | $1,380.00 |
BTS462TATMA1 概述
A smart high-side power switch is a semiconductor relay that places the load between ground and the switch output, allowing the IC to drive resistive, capacitive, and inductive loads with controlled turn-on/turn-off. High-side switches sit in the power management IC hierarchy above simple MOSFET drivers and below multi-channel system basis chips, providing per-channel protection against the most common fault modes encountered in automotive wiring (short-to-ground, overload, load-dump, and reverse-battery events).
Key specifications include a continuous drain current of 3.5 A, an on-state resistance (RDS(on)) typically around 50 mOhm at 25 C, current-limit trip near 7 A, and built-in thermal shutdown with auto-restart. The device also features overvoltage protection covering load-dump transients, undervoltage shutdown to prevent in-rush faults, fast demagnetization for inductive loads, and a diagnostic feedback pin that signals open-load and overtemperature conditions back to the host microcontroller.
Architecturally, the BTS462TATMA1 uses a vertical N-channel DMOS output stage driven by a CMOS charge-pump and logic interface, all co-integrated on a single die. The charge-pump maintains the gate drive above the source rail, ensuring low RDS(on) regardless of battery voltage. This monolithic integration delivers far better protection coverage than a discrete MOSFET plus fuse approach while reducing PCB footprint.
Typical applications include automotive body controllers driving lamps, solenoids, and DC motors; industrial PLC discrete output modules; HVAC actuators; and any 12 V/24 V load that requires embedded protection. The PG-TO252-5 package provides a thermal pad that, when properly soldered to a copper pour, enables sustained 3.5 A operation without a heatsink.
When designing with the BTS462TATMA1, observe input capacitor placement (close to Vbb pin) and a generous copper area on the drain tab to limit junction temperature rise. Fault-flag interpretation should be debounced in software, as the STATUS pin can pulse during legitimate switching transients.
This page consolidates distributor pricing, cross-brand drop-in equivalents, and practical protection-circuit notes that extend beyond the manufacturer datasheet's typical application example.
直接替换替代料： BTS462TATMA1 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： BTS462TATMA1 （相同外形与封装尺寸） ——差异在于 Package, Product Type, Automotive Qualification, Operating Temperature, Protection Features.
快速对比工具——选择替代料号进行并排对比：
BTS452RATMA1
✓ 有现货
$0.85 / 个
查看数据手册 →BTS6143DAUMA1
✓ 有现货
$1.21 / 个
查看数据手册 →BTS6133DAUMA1
✓ 有现货
$1.98 / 个
查看数据手册 →BTS5014SDAAUMA1
✓ 有现货
$1.55 / 个
查看数据手册 →BSP78HUMA1
✓ 有现货
$0.62 / 个
查看数据手册 →ITS4200SMEPHUMA1
✓ 有现货
$0.99 / 个
查看数据手册 →BTS462TATMA1 最大额定值与电气特性
| Manufacturer | Infineon Technologies |
| Product Type | Smart High-Side Power Switch |
| Number of Channels | 1 |
| 输出配置 | High-Side |
| Output Current (Continuous) | 3.5 A |
| Supply Voltage Range (Vbb) | 5 V to 34 V |
| Load Dump Protection | Yes |
| Overvoltage Protection | Yes |
| Overload / Current Limit | Yes |
| Short-Circuit Protection | Yes |
| 热关断 | Yes (with auto-restart) |
| Undervoltage Shutdown | Yes |
| Fast Demagnetization | Yes (for inductive loads) |
| Diagnostic Output (STATUS pin) | Yes |
| 工作温度 | -40 C to +150 C (junction) |
| 封装 | PG-TO252-5 (DPAK-5) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
BTS462TATMA1 引脚配置
| 引脚 1 | OUT — Power output to load (also exposed tab) |
| 引脚 2 | Vbb — Battery / supply voltage input (5 V to 34 V) |
| 引脚 3 | GND — Logic and power ground |
| 引脚 4 | IN — Logic input (TTL/CMOS compatible, drives gate) |
| 引脚 5 | STATUS — Diagnostic output (open-drain fault flag) |
典型应用
BTS462TATMA1 适用于 6 应用s: Automotive Body Control Modules, Industrial PLC Discrete Outputs, HVAC Actuator and Valve Drivers, LED Lighting Modules and Drivers, Solenoid and Relay Coil Driving, Battery-Powered Equipment Load Switch.
Automotive Body Control Modules
The BTS462TATMA1 is a strong fit for automotive body control modules driving lamps, mirror heaters, and small solenoids from a 12 V battery rail. Its 5 V to 34 V supply range with integrated load-dump protection handles ISO 7637-2 transient events without external TVS components. The 3.5 A continuous current covers typical incandescent and early-LED rear-lamp loads, while the STATUS feedback pin lets the BCM microcontroller detect open-filament or short-circuit faults and illuminate a dashboard warning. The MINI-PROFET architecture also demagnetizes inductive loads like door-lock solenoids safely inside the IC, eliminating the catch diode that a discrete MOSFET design would otherwise require.
推荐
Industrial PLC Discrete Outputs
The BTS462TATMA1 serves as the output stage for industrial PLC discrete output modules interfacing 24 V field loads. Its 34 V upper supply limit covers the 24 V nominal rail plus transient excursions, and the integrated current-limit and thermal shutdown protect the module from wiring faults in the field. Compared to a discrete MOSFET plus fuse design, the BTS462TATMA1 eliminates the fuse-replacement maintenance issue entirely, since the IC self-recovers after thermal shutdown. The PG-TO252-5 package fits standard PLC card form factors, and the exposed tab solders to the card's ground pour to dissipate the heat from continuous 24 V relay-coil driving.
推荐
HVAC Actuator and Valve Drivers
The BTS462TATMA1 drives HVAC damper actuators, water valves, and small 24 V brushless DC fans with built-in protection against stalled-rotor conditions. The fast-demagnetization circuitry handles the back-EMF of motor windings without an external freewheeling diode, simplifying PCB layout. The thermal-shutdown-with-restart behavior is ideal for HVAC safety: if a damper actuator jams, the IC limits current, heats up, and cycles rather than latching off and leaving the building unconditioned. The 3.5 A rating comfortably covers small shaded-pole motors and most proportional valves used in residential and light-commercial HVAC equipment.
推荐
LED Lighting Modules and Drivers
The BTS462TATMA1 functions as a high-side enable switch for LED lighting modules, including automotive tail lamps, interior strips, and architectural lighting fixtures. When the LED string fails open, the open-load detection flags the fault through the STATUS pin, supporting predictive maintenance. The current-limit protects the LED chain from supply overvoltage events, while the integrated overvoltage clamp absorbs load-dump pulses that would otherwise require an external TVS. Driving LEDs from the high side keeps the lamp chassis at ground potential, simplifying EMI and mechanical design for metal-bodied fixtures.
推荐
Solenoid and Relay Coil Driving
The BTS462TATMA1 directly drives small 12 V and 24 V solenoid and relay coils with embedded inductive-load protection. Internal avalanche clamping absorbs the coil's back-EMF on turn-off, replacing the discrete flyback diode that traditionally sits across the coil. This reduces PCB area and improves reliability by removing a discrete part that could fail open. The 3.5 A rating covers most fuel-injection, transmission-shift, and industrial relay coils; for larger solenoids, the BTS6143DAUMA1 sibling provides similar pin-out at higher current.
推荐
Battery-Powered Equipment Load Switch
The BTS462TATMA1 acts as a load-disconnect switch in battery-powered equipment, isolating sub-systems during deep-sleep to extend runtime. Its 5 V minimum operating voltage covers single-cell Li-ion down to nearly empty, while the undervoltage shutdown prevents inrush faults during battery recovery. The STATUS pin can wake a microcontroller when a downstream short develops, supporting fault-aware power management. Compared to a P-MOSFET load switch, the BTS462TATMA1 provides true current limiting rather than simple on/off switching, protecting Li-ion cells from over-current discharge events.
推荐
推荐产品汇总
工程参考数据： BTS462TATMA1 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | BTS452RATMA1 | BTS6143DAUMA1 | BTS6133DAUMA1 | BSP78HUMA1 |
|---|---|---|---|---|---|
| Package | PG-TO252-5 (DPAK-5) | PG-TO252-5 (DPAK-5) - same | PG-TO252-5 (DPAK-5) - same | PG-TO252-5 (DPAK-5) - same | PG-TO252-5 (DPAK-5) - same |
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon |
| Continuous Output Current | 3.5 A | 1.8 A (-49%) | 7 A (+100%) | 4 A (+14%) | 3 A (-14%) |
| Supply Voltage Range | 5 V to 34 V | 5 V to 34 V (same) | 5 V to 34 V (same) | 5 V to 34 V (same) | 5 V to 34 V (same) |
| Load-Dump Protection | Yes | Yes | Yes | Yes | Yes |
| Diagnostic STATUS Pin | Yes | Yes | Yes | Yes | Yes |
| Thermal Shutdown | Yes (auto-restart) | Yes (auto-restart) | Yes (auto-restart) | Yes (auto-restart) | Yes (auto-restart) |
| Inductive Load Demagnetization | Yes (fast) | Yes | Yes | Yes | Yes |
关键差异点
- Higher continuous current in same DPAK footprint （对比 BTS452RATMA1)
- Lower current for better thermal margin （对比 BTS6143DAUMA1)
- Infineon-only pin-compatible family （对比 VNQ5E050MK-E (STMicroelectronics))
设计说明
Estimated: at 3.5 A load with RDS(on) of ~50 mOhm, the BTS462TATMA1 dissipates roughly 0.6 W. With a 4-layer PCB and 1 square inch of copper pad, theta_JA is approximately 50 C/W, giving a junction temperature rise of 30 C above a 25 C ambient. To sustain full 3.5 A at 85 C ambient, expand the copper pour to 2 square inches or use thermal vias to the inner ground plane. The exposed tab is the OUT pin and must be soldered for both thermal and electrical reasons.
Place a 100 nF ceramic decoupling capacitor as close as possible to the Vbb pin to suppress load-dump-induced ringing. Add a 10 uF bulk capacitor on the supply rail if the BTS462TATMA1 is more than 5 cm from the main bulk capacitor. The exposed tab should be soldered to a copper pour of at least 1 square inch on the top layer, with thermal vias to the inner ground plane for improved heat spreading.
Do not float the IN pin - tie it through a 10 kOhm pull-up to Vlogic or to a microcontroller GPIO; a floating input can partially turn on the MOSFET and overheat the part. Do not connect the STATUS pin directly to Vbb without a pull-up resistor - it is an open-drain output rated only to about 5 V on most MINI-PROFET variants. For very fast PWM (>1 kHz), check the slew-rate specification in the datasheet, as the gate charge can limit switching losses.
合规信息
RoHS and REACH compliance confirmed by Infineon product page. AEC-Q100 qualification status for this exact part number is not confirmed in the verified web data - confirm with Infineon sales before using in production automotive designs.
