Specifications
| Type | Description |
|---|---|
| Part Number | CSD87351Q5D |
| Manufacturer | Texas Instruments |
| Product Type | LDO Regulator |
| Category | Power Management |
| Package / Case | SON 5.00 mm x 6.00 mm plastic package |
| Topology | Half-bridge power block; synchronous buck applications |
| System Efficiency | 90%; at 20 A |
| Operating Current | Up to 32 A; recommended operation |
| Switching Frequency Capability | Up to 1.5 MHz; high-frequency operation |
| Optimized Gate Drive | 5 V; external controller/driver gate drive |
| Absolute Maximum VIN to PGND Voltage | -0.8 to 30 V; TA=25°C unless otherwise noted |
| Absolute Maximum TG to TGR Voltage | -8 to 10 V; TA=25°C unless otherwise noted |
| Absolute Maximum BG to PGND Voltage | -8 to 10 V; TA=25°C unless otherwise noted |
| Pulsed Current Rating | 96 A; pulse duration <=50 us, duty cycle <=0.01% |
| Power Dissipation | 12 W; absolute maximum, TA=25°C unless otherwise noted |
| SyncFET Avalanche Energy | 378 mJ; ID=87 A, L=0.1 mH |
| ControlFET Avalanche Energy | 87 mJ; ID=44 A, L=0.1 mH |
| Operating Junction Temperature | -55 to 150 °C; absolute maximum rating |
| Storage Temperature | -55 to 150 °C; absolute maximum rating |
| Recommended Gate Drive Voltage | 4.5 to 8 V; TA=25°C unless otherwise noted |
| Recommended Input Supply Voltage | Max 27 V; TA=25°C unless otherwise noted |
| Recommended Switching Frequency | 200 to 1500 kHz; CBST=0.1 uF minimum |
| Recommended Operating Current | 32 A; TA=25°C unless otherwise noted |
| Recommended Operating Junction Temperature | Max 125 °C; TA=25°C unless otherwise noted |
| Power Loss | Typ 2.5 W; VIN=12 V, VGS=5 V, VOUT=1.3 V, IOUT=20 A, fSW=500 kHz, LOUT=0.3 uH, TJ=25°C |
| VIN Quiescent Current | Typ 10 uA; TG to TGR=0 V, BG to PGND=0 V |
| Junction-to-Ambient Thermal Resistance | Typ 119 °C/W; minimum copper, device mounted on FR4 with 1 in2 Cu |
| Junction-to-Ambient Thermal Resistance | Typ 62 °C/W; maximum copper, device mounted on FR4 with 1 in2 Cu |
| Junction-to-Case Thermal Resistance | Typ 25 °C/W; top of package |
| Junction-to-Case Thermal Resistance | Typ 2.3 °C/W; PGND pin |
| ControlFET Drain-to-Source Voltage | Min 30 V; VGS=0 V, IDS=250 uA |
| SyncFET Drain-to-Source Voltage | Min 30 V; VGS=0 V, IDS=250 uA |
| ControlFET Drain-to-Source Leakage Current | Max 1 uA; VGS=0 V, VDS=24 V |
| SyncFET Drain-to-Source Leakage Current | Max 1 uA; VGS=0 V, VDS=24 V |
| ControlFET Gate-to-Source Leakage Current | Max 100 nA; VDS=0 V, VGS=+10/-8 V |
| SyncFET Gate-to-Source Leakage Current | Max 100 nA; VDS=0 V, VGS=+10/-8 V |
| ControlFET Gate-to-Source Threshold Voltage | Min 1.0 V, Max 2.1 V; VDS=VGS, IDS=250 uA |
| SyncFET Gate-to-Source Threshold Voltage | Min 0.75 V, Max 1.15 V; VDS=VGS, IDS=250 uA |
| ControlFET Effective AC On-Impedance | Typ 7.4 mOhm; VIN=12 V, VGS=5 V, VOUT=1.3 V, IOUT=20 A, fSW=500 kHz, LOUT=0.3 uH |
| SyncFET Effective AC On-Impedance | Typ 1.6 mOhm; VIN=12 V, VGS=5 V, VOUT=1.3 V, IOUT=20 A, fSW=500 kHz, LOUT=0.3 uH |
| ControlFET Transconductance | Typ 75 S; VDS=15 V, IDS=20 A |
| SyncFET Transconductance | Typ 142 S; VDS=15 V, IDS=20 A |
| ControlFET Input Capacitance | Typ 966 pF, Max 1255 pF; VGS=0 V, VDS=15 V, f=1 MHz |
| SyncFET Input Capacitance | Typ 2410 pF, Max 3133 pF; VGS=0 V, VDS=15 V, f=1 MHz |
| ControlFET Output Capacitance | Typ 382 pF, Max 497 pF; VGS=0 V, VDS=15 V, f=1 MHz |
| SyncFET Output Capacitance | Typ 1130 pF, Max 1469 pF; VGS=0 V, VDS=15 V, f=1 MHz |
| ControlFET Reverse Transfer Capacitance | Typ 19 pF, Max 25 pF; VGS=0 V, VDS=15 V, f=1 MHz |
| SyncFET Reverse Transfer Capacitance | Typ 45 pF, Max 59 pF; VGS=0 V, VDS=15 V, f=1 MHz |
| ControlFET Series Gate Resistance | Typ 0.9 Ohm, Max 1.8 Ohm; TA=25°C unless otherwise stated |
| SyncFET Series Gate Resistance | Typ 1 Ohm, Max 2 Ohm; TA=25°C unless otherwise stated |
| ControlFET Total Gate Charge | Typ 5.9 nC, Max 7.7 nC; VGS=4.5 V, VDS=15 V, IDS=20 A |
| SyncFET Total Gate Charge | Typ 17 nC, Max 22 nC; VGS=4.5 V, VDS=15 V, IDS=20 A |
| ControlFET Gate-to-Drain Charge | Typ 1.1 nC; VDS=15 V, IDS=20 A |
| SyncFET Gate-to-Drain Charge | Typ 3.1 nC; VDS=15 V, IDS=20 A |
| ControlFET Gate-to-Source Charge | Typ 2.1 nC; VDS=15 V, IDS=20 A |
| SyncFET Gate-to-Source Charge | Typ 3.7 nC; VDS=15 V, IDS=20 A |
| ControlFET Gate Charge at Threshold | Typ 1.1 nC; VDS=15 V, IDS=20 A |
| SyncFET Gate Charge at Threshold | Typ 2 nC; VDS=15 V, IDS=20 A |
| ControlFET Output Charge | Typ 6.5 nC; VDS=9.8 V, VGS=0 V |
| SyncFET Output Charge | Typ 23 nC; VDS=9.8 V, VGS=0 V |
| ControlFET Turn-On Delay Time | Typ 6.1 ns; VDS=15 V, VGS=4.5 V, IDS=20 A, RG=2 Ohm |
| SyncFET Turn-On Delay Time | Typ 7.7 ns; VDS=15 V, VGS=4.5 V, IDS=20 A, RG=2 Ohm |
| ControlFET Rise Time | Typ 16 ns; VDS=15 V, VGS=4.5 V, IDS=20 A, RG=2 Ohm |
| SyncFET Rise Time | Typ 10 ns; VDS=15 V, VGS=4.5 V, IDS=20 A, RG=2 Ohm |
| ControlFET Turn-Off Delay Time | Typ 10 ns; VDS=15 V, VGS=4.5 V, IDS=20 A, RG=2 Ohm |
| SyncFET Turn-Off Delay Time | Typ 31 ns; VDS=15 V, VGS=4.5 V, IDS=20 A, RG=2 Ohm |
| ControlFET Fall Time | Typ 2.1 ns; VDS=15 V, VGS=4.5 V, IDS=20 A, RG=2 Ohm |
| SyncFET Fall Time | Typ 4.2 ns; VDS=15 V, VGS=4.5 V, IDS=20 A, RG=2 Ohm |
| ControlFET Diode Forward Voltage | Typ 0.86 V, Max 1 V; IDS=20 A, VGS=0 V |
| SyncFET Diode Forward Voltage | Typ 0.78 V, Max 1 V; IDS=20 A, VGS=0 V |
| ControlFET Reverse Recovery Charge | Typ 8.6 nC; Vdd=9.8 V, IF=20 A, di/dt=300 A/us |
| SyncFET Reverse Recovery Charge | Typ 23 nC; Vdd=9.8 V, IF=20 A, di/dt=300 A/us |
| ControlFET Reverse Recovery Time | Typ 16 ns; Vdd=9.8 V, IF=20 A, di/dt=300 A/us |
| SyncFET Reverse Recovery Time | Typ 24 ns; Vdd=9.8 V, IF=20 A, di/dt=300 A/us |
| Datasheet Status | request_only |
Product Overview
Texas Instruments CSD87351Q5D is a synchronous buck power block categorized under Power_Management. Its topology is a half-bridge power block for synchronous buck applications, integrating ControlFET and SyncFET behavior characterized across gate charge, capacitance, leakage, switching timing, diode, and reverse-recovery parameters.
The device is supplied in a SON 5.00 mm x 6.00 mm plastic package. Recommended operation includes up to 32 A operating current, input supply voltage up to 27 V, and a gate drive voltage range of 4.5 to 8 V. It is optimized for a 5 V external controller or driver gate drive and supports switching from 200 to 1500 kHz with CBST of 0.1 uF minimum.
Performance data includes 90% system efficiency at 20 A and typical 2.5 W power loss under VIN=12 V, VGS=5 V, VOUT=1.3 V, IOUT=20 A, fSW=500 kHz, LOUT=0.3 uH, and TJ=25°C. Thermal data includes junction-to-ambient and junction-to-case resistance values for copper and package reference conditions.
Key Features
- Half-bridge power block for synchronous buck applications
- 90% system efficiency specified at 20 A
- Recommended operating current specified at 32 A
- Supports switching frequency capability up to 1.5 MHz
- Optimized for 5 V external gate drive
- Recommended gate drive voltage range is 4.5 to 8 V
- Recommended input supply voltage is up to 27 V
- Typical power loss is 2.5 W at stated conditions
- ControlFET effective AC on-impedance is typ 7.4 mOhm
- SyncFET effective AC on-impedance is typ 1.6 mOhm
Typical Applications
- Synchronous buck applications
- Half-bridge power stages
- High-current buck conversion
- 12 V input buck rails
- 1.3 V output buck rails
- High-frequency DC-DC conversion
- External controller gate-drive designs
Procurement Notes
When requesting a quote for CSD87351Q5D, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For power IC and power device sourcing, voltage rating, current rating, power dissipation, package thermal performance, protection features, qualification grade and application conditions should be reviewed before approval.
FAQ
What type of power device is CSD87351Q5D?
CSD87351Q5D is a Texas Instruments synchronous buck power block for Power_Management applications. The extracted topology is a half-bridge power block intended for synchronous buck applications.
What package is specified for CSD87351Q5D?
The package case is specified as a SON 5.00 mm x 6.00 mm plastic package. Thermal data includes junction-to-case values referenced to the top of package and PGND pin.
What are the recommended operating limits for this part?
Recommended operating data includes up to 32 A operating current, input supply voltage up to 27 V, gate drive voltage from 4.5 to 8 V, switching frequency from 200 to 1500 kHz, and junction temperature up to 125 °C.
What efficiency and power loss data are provided?
The extracted facts specify 90% system efficiency at 20 A. Typical power loss is 2.5 W under VIN=12 V, VGS=5 V, VOUT=1.3 V, IOUT=20 A, fSW=500 kHz, LOUT=0.3 uH, and TJ=25°C.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 13, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.