仕様
| 属性 | 値 |
| Package / Case | Tape & Reel (TR),Cut Tape (CT),Bulk |
| Part Status | Active |
| Type | DC DC Controller |
| Topology | Step-Up (Boost) |
| Internal Switch(s) | No |
| Number of Outputs | 8 |
| Voltage - Supply (Min) | 8V |
| Voltage - Supply (Max) | 30V |
| Current - Output / Channel | 70mA |
| Frequency | 500kHz ~ 800kHz |
| Dimming | PWM |
| Applications | Backlight |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
概要
Description
TPS61199PWPR is a Texas Instruments single‑channel boost LED driver. It uses a boost regulator to drive a white LED string from a low-voltage source (typical input 2.7–5.5 V) with constant current set by an external resistor (ISET). It requires external inductor, Schottky diode, and LEDs, but integrates the regulation and protection logic.
Key features:
- Adjustable LED current (ISET) for constant-current operation
- High efficiency boost operation
- PWM or DC dimming options
- Protection: short-circuit, overvoltage, thermal shutdown
- Soft-start to limit inrush
- Small 8‑pin PWPR package (compact footprint)
Common applications: camera flashes/backlights, indicator LEDs, and other mobile-device LED lighting.
For exact electrical specs, pinout, and recommended external components, see the TPS61199 datasheet and TI’s product pages (WebENCH, app notes).
Key features:
- Adjustable LED current (ISET) for constant-current operation
- High efficiency boost operation
- PWM or DC dimming options
- Protection: short-circuit, overvoltage, thermal shutdown
- Soft-start to limit inrush
- Small 8‑pin PWPR package (compact footprint)
Common applications: camera flashes/backlights, indicator LEDs, and other mobile-device LED lighting.
For exact electrical specs, pinout, and recommended external components, see the TPS61199 datasheet and TI’s product pages (WebENCH, app notes).
Pinout
- Pin count: 8 pins (WSON-8 package, TPS61199PWPR)
- Function: High-efficiency boost converter LED driver. It powers and regulates current through a LED string from a lower input voltage. Key pins include VIN, GND, EN (enable), SW (switch node), BST (bootstrap), FB (feedback), ISET/ILIM (current set), and LED (LED string connection).
- Function: High-efficiency boost converter LED driver. It powers and regulates current through a LED string from a lower input voltage. Key pins include VIN, GND, EN (enable), SW (switch node), BST (bootstrap), FB (feedback), ISET/ILIM (current set), and LED (LED string connection).
Manufacturer
- Manufacturer: Texas Instruments (TI)
- Company type: American multinational semiconductor company that designs and manufactures analog and mixed-signal integrated circuits and embedded processing products used in a wide range of electronics.
- Company type: American multinational semiconductor company that designs and manufactures analog and mixed-signal integrated circuits and embedded processing products used in a wide range of electronics.
Application
TPS61199PWPR is a high‑efficiency, single‑string, boost LED driver. Typical applications:
- LCD backlighting and display illumination in portable devices (phones, tablets, notebooks, small displays)
- Indicator/backlight LEDs in consumer electronics
- Automotive interior/instrument cluster lighting
- Battery-powered or USB-powered LED lighting and signage requiring constant current
- Single-string constant-current LED drive in space-constrained layouts
- LCD backlighting and display illumination in portable devices (phones, tablets, notebooks, small displays)
- Indicator/backlight LEDs in consumer electronics
- Automotive interior/instrument cluster lighting
- Battery-powered or USB-powered LED lighting and signage requiring constant current
- Single-string constant-current LED drive in space-constrained layouts
Package
TPS61199PWPR uses the PW package: an 8-pin VSSOP (3×3 mm) package with an exposed pad.
