TPS51120RHBR
Active4.5-V TO 28-V, DUAL-CHANNEL SYNCHRONOUS BUCK CONTROLLER WITH LOW STANDBY CURRENT CONSUMPTION
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TPS51120RHBR
Active4.5-V TO 28-V, DUAL-CHANNEL SYNCHRONOUS BUCK CONTROLLER WITH LOW STANDBY CURRENT CONSUMPTION
Technical Specifications
Parameters and characteristics for this part
| Specification | TPS51120RHBR |
|---|---|
| Clock Sync | False |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 2 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Phases | 1 |
| Output Type | Transistor Driver |
| Package / Case | 32-VFQFN Exposed Pad |
| Supplier Device Package | 32-VQFN (5x5) |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Supply (Vcc/Vdd) [Max] | 28 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 4.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 3.95 | |
| 10 | $ 3.55 | |||
| 25 | $ 3.36 | |||
| 100 | $ 2.91 | |||
| 250 | $ 2.76 | |||
| 500 | $ 2.48 | |||
| 1000 | $ 2.09 | |||
| Digi-Reel® | 1 | $ 3.95 | ||
| 10 | $ 3.55 | |||
| 25 | $ 3.36 | |||
| 100 | $ 2.91 | |||
| 250 | $ 2.76 | |||
| 500 | $ 2.48 | |||
| 1000 | $ 2.09 | |||
| Tape & Reel (TR) | 3000 | $ 1.85 | ||
| Texas Instruments | LARGE T&R | 1 | $ 3.28 | |
| 100 | $ 2.88 | |||
| 250 | $ 2.02 | |||
| 1000 | $ 1.63 | |||
Description
General part information
TPS51120 Series
The TPS51120 is a highly sophisticated dual, synchronous step-down controller. It is a full featured controller designed to run directly off a three- or four-cell Li-ion battery and provide high-power and 5-V and/or 3.3-V standby regulation for all the downstream circuitry in a notebook computer system. High-current, 100-mA, 5-V or 3.3-V on-board linear regulators have glitch-free switch over function to SMPS and can be kept alive independently during standby state. The pseudo-constant frequency adaptive on-time control scheme supports full range of current mode operation including simplified loop compensation, ceramic output capacitors as well as seamless transition to reduced frequency operation at light-load condition. Optional D-CAP mode operation optimized for SP-CAP or POSCAP output capacitors allows further reduction of external compensation parts. Dynamic UVP supports VIN line sag without latch off by hitting 5-V UVP. No negative voltage appears at output voltage node during UVLO, UVP, and OCP, OTP or loss of VIN.
The TPS51120 32-pin QFN package is specified from –40°C to 85°C ambient temperature.
The TPS51120 is a highly sophisticated dual, synchronous step-down controller. It is a full featured controller designed to run directly off a three- or four-cell Li-ion battery and provide high-power and 5-V and/or 3.3-V standby regulation for all the downstream circuitry in a notebook computer system. High-current, 100-mA, 5-V or 3.3-V on-board linear regulators have glitch-free switch over function to SMPS and can be kept alive independently during standby state. The pseudo-constant frequency adaptive on-time control scheme supports full range of current mode operation including simplified loop compensation, ceramic output capacitors as well as seamless transition to reduced frequency operation at light-load condition. Optional D-CAP mode operation optimized for SP-CAP or POSCAP output capacitors allows further reduction of external compensation parts. Dynamic UVP supports VIN line sag without latch off by hitting 5-V UVP. No negative voltage appears at output voltage node during UVLO, UVP, and OCP, OTP or loss of VIN.
Documents
Technical documentation and resources