TPS7H4002HKH/EM Switching Voltage Regulators Radiation-hardened QMLV
TPS7H4002HKH/EM Switching Voltage Regulators Radiation-hardened QMLV
| Texas Instruments | |
| Product Category: | Switching Voltage Regulators |
| RoHS: | Details |
| 804 mV to 5.3 V | |
| 3 A | |
| 5.5 V | |
| 1 Output | |
| Buck | |
| CFP-20 | |
| SMD/SMT | |
| 100 kHz to 1 MHz | |
| - 55 C | |
| + 150 C | |
| 3 V | |
| Brand: | Texas Instruments |
| Input Voltage: | 3 V to 5.5 V |
| Product: | Evaluation Modules |
| Product Type: | Switching Voltage Regulators |
| Shutdown: | Shutdown |
| Subcategory: | PMIC - Power Management ICs |
| Supply Voltage - Min: | 3 V |
| Type: | Synchronous |
Description
The TPS7H4002-SP is a radiation hardened, 5.5-V, 3-A synchronous step-down converter, which isoptimized
for small designs through high efficiencyand by integrating the high-side and low-sideMOSFETs. Further
space savings are achievedthrough current mode control, which reducescomponent count, and a high
switching frequency,which reduces the inductor footprint.The output voltage startup ramp is controlled by
theSS/TR pin which allows operation as either a standalone power supply or in tracking situations. Power
sequencing is also possible by correctly configuringthe enable and the open drain power good pins. Inaddition,
the TPS7H4002-SP can be configured inprimary-secondary mode for parallel operation.Cycle-by-cycle current
limiting on the high-sideFET protects the device in overload situations andis enhanced by a low-side sourcing
current limitwhich prevents current runaway. There is also alow-side sinking current limit which turns off thel
ow-side MOSFET to prevent excessive reversecurrent. Thermal shutdown disables the part when dietemperature
exceeds thermal limit.
Features
• Radiation performance:
– Radiation-hardness-assured up toTID 100 krad(Si)
– SEL, SEB, and SEGR immune toLET = 75 MeV-cm2/mg
– SET and SEFI characterized up toLET = 75 MeV-cm2/mg
• Peak efficiency: 96.9% (VO = 2.5 V)
• Integrated 50-mΩ and 35-mΩ MOSFETs
• Power rail: 3 to 5.5 V on VIN
• 3-A maximum output current
• Flexible switching frequency options:
– 100-kHz to 1-MHz adjustable internal oscillator
– External sync capability: 100 kHz to 1 MHz
– SYNC pin can be configured as a 500-kHzoutput for primary-secondary applications
• 0.807-V ±1.5% voltage reference overtemperature, radiation, and line and loadregulation
• Monotonic start-up into prebiased outputs
• Adjustable soft start through external capacitor
• Input enable and power-good output for powersequencing
• Power good output monitor for undervoltage andovervoltage
• Adjustable input undervoltage lockout (UVLO)
• 20-pin ultra-small, thermally-enhanced ceramicflatpack package (HKH) for space applications
