Tsum1pfr-lf Datasheet

Supports the LVDS (Low-Voltage Differential Signaling) panel interface format.

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These receive high-frequency analog signals from standard VGA inputs. They consist of dedicated pins for Red, Green, and Blue analog lines alongside Horizontal Sync (H-Sync) and Vertical Sync (V-Sync) signal pins. 2. LVDS Interface Output Pins

Not directly. The pfr designation implies PFC-specific features (multiplier, input voltage sensing). For flyback, look for a standard PWM controller like UC3842. Tsum1pfr-lf Datasheet

The chip operates in high-heat areas near display backing elements. When swapping this IC out during repairs, verify the integrity of nearby decoupling capacitors and confirm the stability of the local linear power regulators.

Disclaimer: This article is for educational and reference purposes. The Tsum1pfr-lf is not an active product from any major semiconductor house as of 2026. Verify all details with the original component supplier.

The , while not a mass-market published document, describes a component that fits the profile of a modern, lead-free, 1A low-dropout linear regulator. Its key strengths are low quiescent current, tight output accuracy, and integrated protection. When working with this part, prioritize thermal management, verify the actual pinout via continuity tests, and cross-reference with LDOs from Texas Instruments, Diodes Inc., or Richtek if a genuine datasheet remains elusive. They consist of dedicated pins for Red, Green,

Supports LVDS (Low-Voltage Differential Signaling) panel interface formats.

| Parameter | Condition | Min | Typ | Max | Unit | | :--- | :--- | :--- | :--- | :--- | :--- | | Supply Current (startup) | Before switching | - | 50 | 100 | µA | | Supply Current (operating) | fsw=65kHz, no load | 1.5 | 2.5 | 3.5 | mA | | UVLO Turn-On Threshold | VCC rising | 10.5 | 11.2 | 11.8 | V | | UVLO Hysteresis | - | - | 1.5 | - | V | | Reference Voltage (FB) | TA=25°C | 2.475 | 2.500 | 2.525 | V | | Oscillator Frequency | RT=100kΩ to GND | 50 | 65 | 80 | kHz | | Maximum Duty Cycle | - | 85 | 92 | 95 | % | | CS Trip Voltage | Overcurrent limit | 0.48 | 0.50 | 0.52 | V | | Output Rise Time | CLOAD=1nF | - | 40 | 80 | ns |

The TSUM1PFR-LF was widely deployed in and small to medium-sized LCD TVs during the late 2000s to early 2010s. Specific known implementations include: a PLL (Phase-Locked Loop)

Always request a certificate of conformance and RoHS analysis for any -lf component. Counterfeit or remarked parts may omit lead-free plating, risking assembly defects.

It combines a high-speed triple-ADC (Analog-to-Digital Converter), a PLL (Phase-Locked Loop), a scaling engine, and an internal microcontroller into a single package. Resolution Support: It typically supports resolutions up to Package Type: Most commonly found in a (64-pin Quad Flat Package). Output Interface: It supports

Optimized for low-voltage, high-speed operations with low standby power Pinout Configuration & Hardware Design