NXP Semiconductors TLVH431IDBZR,215

Overview

TLVH431IDBZR,215 from NXP Semiconductors is an I-grade (±1 % reference tolerance), low-voltage, three-terminal adjustable shunt regulator in SOT23 package, operating from −40 °C to +85 °C, with 1.24 V reference voltage, 0.1 Ω typical dynamic impedance, and 70 mA max cathode sink current - used for precision feedback in isolated SMPS and current-limiting circuits.

For engineers reviewing the TLVH431IDBZR,215 datasheet, TLVH431IDBZR,215 pinout, TLVH431IDBZR,215 application, or TLVH431IDBZR,215 equivalent, this page delivers verified electrical specs, thermal derating curves, AEC-Q100 Grade 1 qualification status, and real-world design implications for automotive and industrial power regulation.

Technical Context

The TLVH431IDBZR,215 implements a precision bandgap reference with active output stage, enabling sharp turn-on and stable regulation across 1.24 V to 18 V via external resistor divider. Its internal architecture supports operation down to 0.08 mA cathode current while maintaining <4 mV total reference drift over −40 °C to +85 °C.

Designed for isolated feedback loops, it features low output noise, 0.1 Ω dynamic cathode-anode impedance below 1 kHz, and guaranteed stability with load capacitance ≥1 nF - validated under worst-case temperature and voltage conditions per Figures 21–23 of the datasheet.

Key Specifications

Pinout & Package

SOT23 (TO-236AB) plastic surface-mounted package, 3-lead, normal pinning configuration.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLVH431ACDBZR and TLVH431QDBZR, the TLVH431IDBZR,215 uniquely balances A-grade precision, −40 °C to +85 °C operation, and AEC-Q100 Grade 1 qualification - making it optimal for cost-sensitive automotive body electronics and industrial controllers where full Grade 0 thermal margin is unnecessary.

Availability

TLVH431IDBZR,215 is available at Aetrix Electronics and suitable for automotive power management, industrial SMPS feedback, and precision current-sink applications requiring stable component supply and long-term lifecycle support.

Supply support for TLVH431IDBZR,215 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

NXP Semiconductors is a global semiconductor company specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with leadership in power management and automotive-grade analog ICs.

The TLVH431 family was designed for precision voltage regulation in space-constrained, thermally demanding environments - particularly targeting isolated feedback loops and current-limiting functions in automotive and industrial power supplies.

FAQ

What is the reference voltage tolerance of TLVH431IDBZR,215?

The TLVH431IDBZR,215 has an A-grade reference voltage tolerance of ±1 % at 25 °C, with total variation ≤4 mV over its full operating temperature range of −40 °C to +85 °C. This tolerance is confirmed in Table 10 of the NXP datasheet under "A-Grade (1 %): TLVH431AIDBZR" - the "I" suffix denotes the industrial temperature grade, and "A" denotes the 1 % tolerance bin. The TLVH431IDBZR,215 is the A-grade variant in the I-temp package.

Does TLVH431IDBZR,215 support isolated feedback in SMPS designs?

Yes, TLVH431IDBZR,215 is explicitly validated for isolated feedback loops in Switch Mode Power Supplies, as shown in Figure 29 of the NXP datasheet. Its low output impedance (0.1 Ω), sharp turn-on, and AEC-Q100 Grade 1 qualification make it suitable for automotive and industrial flyback converters where secondary-side regulation accuracy and reliability are critical.

What is the maximum cathode current rating for TLVH431IDBZR,215?

The TLVH431IDBZR,215 supports a maximum cathode sink current of 70 mA, as specified in Table 2 ("Quick reference data") and Table 10 ("Characteristics"). This rating applies under recommended operating conditions with proper PCB thermal design - derating is required above 25 °C ambient per Figure 2's power derating curve for SOT23.

Is TLVH431IDBZR,215 AEC-Q100 qualified?

Yes, TLVH431IDBZR,215 is AEC-Q100 qualified to Grade 1 (−40 °C to +125 °C junction temperature), as stated in Section 2 ("Features and benefits") and Section 14.1 ("Quality information"). This qualification covers stress testing for automotive use, including temperature cycling, humidity bias, and ESD robustness - confirming suitability for non-safety-critical automotive electronics.

What package type and pin configuration does TLVH431IDBZR,215 use?

TLVH431IDBZR,215 uses the SOT23 (TO-236AB) plastic surface-mount package with normal pinning: Pin 1 = REF, Pin 2 = K (cathode), Pin 3 = A (anode). This configuration is confirmed in Table 5 ("Pinning") and Table 3 ("Ordering information"), and matches the marking code "NN*" per Table 4.