TLS850B0TEV50ATMA1 - 5V 500mA 40V LDO Regulator | Infineon
料号： TLS850B0TEV50ATMA1 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.76 | $1.76 |
| 10 | $1.58 | $15.80 |
| 100 | $1.32 | $132.00 |
| 500 | $1.1 | $550.00 |
| 1,000 | $0.96 | $960.00 |
TLS850B0TEV50ATMA1 概述
A low-dropout (LDO) linear regulator is a type of voltage regulator that maintains a stable DC output voltage even when the input-to-output voltage headroom is small. LDOs sit in the broader hierarchy of linear regulators, which belong to voltage regulators and ultimately to the power management integrated circuit (PMIC) family. Unlike a switching DC-DC converter, an LDO dissipates VIN - VOUT as heat, trading efficiency for exceptionally low output noise and fast transient response.
Key features include a 3.0 V to 40 V input voltage range suitable for direct connection to 12 V or 24 V automotive batteries (including load-dump transients), a fixed 5.0 V output with ±2% accuracy, 500 mA continuous output current, a 100 mV typical (and 250 mV worst-case) dropout at full load, and a 20 µA typical quiescent current that preserves standby energy in always-on subsystems. The IC integrates thermal shutdown, output current limiting, and a power-good output for rail monitoring, and the PG-TO252-5 tab provides a low θJA thermal path for sustained high-current operation.
Internally, the TLS850B0TEV50ATMA1 uses a PNP-pass architecture with a precision bandgap reference and a closed-loop error amplifier. The 100 mV typical dropout minimizes the required input-to-output headroom, which in turn reduces on-die power dissipation and improves thermal performance at high line. The 20 µA quiescent current keeps battery drain low during key-off or sleep modes, while internal protection blocks (Overtemperature, Overcurrent) safeguard the pass element under fault conditions.
Typical applications include automotive body and chassis ECUs (body control modules, instrument clusters, HVAC controllers), 24 V industrial sensor supplies, PLC and HMI power rails, LED driver biasing, and always-on standby rails in battery-connected systems. The 40 V input rating and Infineon OPTIREG robustness make it a direct match for the harsh electrical environments of vehicle powernet and industrial bus systems.
When designing with this part, observe the input/output capacitor selection in the manufacturer datasheet - typically a 1 µF to 10 µF ceramic with low ESR on both rails - and verify the PG-TO252-5 copper area on the PCB keeps the junction temperature below 150 °C at worst-case VIN and full 500 mA load. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
直接替换替代料： TLS850B0TEV50ATMA1 ——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： TLS850B0TEV50ATMA1 （相同外形与封装尺寸） ——差异在于 Package, Output Voltage, Protection Features, Input Voltage Range, Maximum Output Current.
快速对比工具——选择替代料号进行并排对比：
TLS850B0TEV33ATMA1
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TLS850B0TEV33XUMA1
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TLS835B2ELVSEXUMA1
✅ 直接替换✓ 有现货
$1.05 / 个
查看数据手册 →TLE42744DV50ATMA1
✅ 直接替换✓ 有现货
$0.74 / 个
查看数据手册 →TLS850B0TEV50ATMA1 最大额定值与电气特性
| 拓扑 | Low-Dropout (LDO) Linear Regulator |
| 输出类型 | Fixed 5.0 V |
| 输入电压范围 | 3.0 V to 40 V |
| Output Voltage Accuracy | ±2% (max) |
| Output Current Capability | Up to 500 mA |
| 压差电压 | 100 mV typical at full load |
| 静态电流 | 20 µA typical |
| 输出电压 | 5.0 V |
| 输出数量 | 1 |
| Output Polarity | Positive |
| 电源正常输出 | Yes |
| 热关断 | Yes (internal) |
| Output Current Limit | Yes (internal) |
| 封装 | PG-TO252-5 (DPAK, 4 leads + tab) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
| Product Family | OPTIREG linear TLS850B0TE |
TLS850B0TEV50ATMA1 引脚配置
| 引脚 1 | IN — Input voltage supply (3.0 V to 40 V) |
| 引脚 2 | GND — Ground |
| 引脚 3 | PG — Power-Good output (open-drain/active-high per datasheet) |
| 引脚 4 | OUT — Regulated 5.0 V output |
| 引脚 5 | TAB — Exposed thermal tab - tie to GND for heatsinking |
典型应用
TLS850B0TEV50ATMA1 适用于 6 应用s: Automotive Body Control Module (BCM) 5V Rail, Industrial 24V PLC/HMI Power Supply, Sensor and Actuator 5V Bias Supply, Battery-Connected Always-On Standby Rail, Automotive Instrument Cluster 5V Supply, HVAC and Climate Control Module.
Automotive Body Control Module (BCM) 5V Rail
The TLS850B0TEV50ATMA1 fits automotive body and chassis ECU rails because of its 3.0 V to 40 V input, 5.0 V fixed output, and 500 mA capability. Its 40 V maximum input rating tolerates load-dump transients directly without external TVS clamping, simplifying the front-end filter. The 20 µA typical quiescent current keeps drain low during key-off and standby states, while the power-good output gives the host MCU a clean rail-valid signal for sequencing. With 100 mV typical dropout it also rides through cold-crank dips on the 12 V battery. The PG-TO252-5 package is footprint-compatible with existing BCM designs using DPAK-5 linear regulators.
推荐
Industrial 24V PLC/HMI Power Supply
The TLS850B0TEV50ATMA1 is a good fit for 24 V industrial PLC and HMI rails because it accepts up to 40 V at the input, well above the nominal 24 V bus plus its typical transient envelope. Its 500 mA continuous output current is sufficient for a 5 V MCU plus a few digital isolators and signal-conditioning ICs. The 20 µA typical quiescent current keeps standby losses small in always-on industrial controllers. Internal thermal shutdown and current limiting protect the regulator from sustained overload and from inrush transients common on industrial busses.
推荐
Sensor and Actuator 5V Bias Supply
Sensor and actuator subsystems in industrial machinery often require a clean, low-noise 5 V rail at modest currents. The TLS850B0TEV50ATMA1's low quiescent current and 5 V fixed output make it ideal for always-on sensor biasing that remains powered when the main controller sleeps. The wide 3.0 V to 40 V input tolerates noisy 24 V industrial busses without external pre-regulation. The PG output provides a rail-valid flag to the MCU so it can safely read sensor data only after the 5 V rail has settled.
推荐
Battery-Connected Always-On Standby Rail
Battery-connected always-on systems such as telematics units, e-bike controllers and remote sensors require a quiescent-current-minimized 5 V rail that stays alive in deep sleep. The TLS850B0TEV50ATMA1's 20 µA typical quiescent current minimizes standby losses on a 12 V or 24 V battery. Its 40 V input rating handles jump-start transients on 12 V systems without external protection. The 5 V fixed output is suitable for always-on MCUs and RTC circuits, and the PG output can wake the main controller once the rail is stable.
推荐
Automotive Instrument Cluster 5V Supply
Instrument clusters and dashboard modules need a clean 5 V rail for display drivers, stepper motors and indicator LEDs. The TLS850B0TEV50ATMA1 provides up to 500 mA at 5 V fixed, which is enough to drive the cluster logic, gauge drivers and small backlight sub-rails. Its wide input voltage range tolerates cranking and load-dump on the 12 V automotive bus, and its exposed PG-TO252-5 tab dissipates heat efficiently in the confined dashboard enclosure. The power-good output can reset the cluster MCU cleanly on rail-valid edges.
推荐
HVAC and Climate Control Module
HVAC and climate control ECUs in vehicles draw continuous current for fan drivers, sensor bias and communication transceivers, all from a 5 V rail. The TLS850B0TEV50ATMA1's 500 mA capability and 5 V fixed output match the HVAC module's supply requirement. Its 40 V input rating allows direct connection to the 12 V or 24 V vehicle bus without a pre-regulator. The 20 µA quiescent current keeps drain low during idle periods, and the power-good output gives the HVAC controller a clean enable signal after the rail settles.
推荐
推荐产品汇总
工程参考数据： TLS850B0TEV50ATMA1 ——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 | TLS850B0TEV33ATMA1 | TLS850B0TEV33XUMA1 | TLS835B2ELVSEXUMA1 | TLE42744DV50ATMA1 |
|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | PG-TO252-5 (DPAK) | PG-TO252-5 (DPAK) | PG-TO252-5 (DPAK) | PG-TO252-5 (DPAK) | PG-TO252-7 (DPAK-7) |
| Output Voltage | 5.0 V | 3.3 V | 3.3 V | 3.3 V | 5.0 V |
| Output Current | 500 mA | 500 mA | 500 mA | 500 mA | 500 mA |
| Input Voltage Range | 3.0 V to 40 V | 3.0 V to 40 V | 3.0 V to 40 V | 3.0 V to 40 V | Up to 45 V |
| Dropout Voltage | 100 mV typical at 500 mA | 100 mV typical at 500 mA | 100 mV typical at 500 mA | Similar very-low-dropout family | Similar low-dropout OPTIREG family |
| Pin Count | 5 | 5 | 5 | 5 | 7 |
| Power-Good Output | Yes | Yes | Yes | Yes | Yes |
关键差异点
- Very low quiescent current of 20 µA typical （对比 TLE42744DV50ATMA1)
- Wide 3.0 V to 40 V input voltage range （对比 TLE42744DV50ATMA1)
- 5-pin DPAK footprint for compact layouts （对比 TLE42744DV50ATMA1 (DPAK-7))
- Built-in power-good (PG) output for sequencing （对比 TLS850B0TEV33ATMA1)
设计说明
Estimated: at VIN = 24 V, VOUT = 5.0 V and IOUT = 500 mA, power dissipation PD = (VIN - VOUT) × IOUT = 19 V × 0.5 A = 9.5 W. With a PG-TO252-5 θJA of approximately 30 C/W on 1 square inch of copper, the junction temperature rise is about 285 C above ambient, which exceeds the 150 C thermal shutdown threshold. For 24 V input applications, derate the load to ~250 mA or add a larger copper area / external heatmap. At 12 V input, full 500 mA output dissipates 3.5 W, which is comfortable on a 1 square inch copper pour.
Place the input capacitor as close as possible to the IN pin and the output capacitor as close as possible to the OUT pin. The Infineon datasheet recommends a 1 µF to 10 µF ceramic capacitor with low ESR on both rails, and a minimum of 1 µF effective capacitance is required for stability. The exposed thermal tab must be soldered to a copper pour that ties to ground, and the copper area determines the achievable θJA. Use wide, short traces for IN, OUT and GND to minimize parasitic impedance and voltage transients.
Do not exceed the absolute maximum input voltage of 40 V, including load-dump transients. The regulator does not contain internal TVS protection on the input rail, so for harsh automotive environments an external TVS or resistor-zener clamp may be required. Always respect the PG-TO252-5 power dissipation budget: at high VIN - VOUT deltas (for example 24 V to 5 V at full load), the die will hit thermal shutdown unless the load is derated or the copper area is increased.
Keep the power-ground path short and direct - connect the input capacitor, output capacitor, GND pin and thermal tab to a single low-impedance ground plane. Avoid routing noisy switching signals across the OUT node or over the feedback/adjust traces. A small bead or ferrite on the input rail can further attenuate switching noise from upstream DC-DC converters, which is important if the TLS850B0TEV50ATMA1 is used as a post-regulator for an audio or RF analog rail.
合规信息
AEC-Q100 qualified as part of the OPTIREG linear automotive family per Infineon product page. RoHS and REACH compliant per DigiKey listing.
