Gehäuseinformationen
| Gehäuse | Pins DSBGA (YZR) | 25 |
| Betriebstemperaturbereich (°C) -40 to 85 |
| Gehäusemenge | Träger 3.000 | LARGE T&R |
Merkmale von LP3907
- Input Voltage Range: 2.8 V to 5.5 V
- Compatible with Advanced Applications Processors and FPGAs
- 2 LDOs for Powering Internal Processor Functions and I/Os
- High-Speed Serial Interface for Independent Control of Device Functions and Settings
- Precision Internal Reference
- Thermal Overload Protection
- Current Overload Protection
- Software Programmable Regulators
- External Power-On-Reset Function for Buck1 and Buck2 (Power Good with Delay Function)
- Undervoltage Lockout Detector to Monitor Input Supply Voltage
- Step-Down DC-DC Converters (Buck)
- Programmable VOUT from:
- Buck1 : 0.8 V–2 V at 1 A
- Buck2 : 1 V–3.5 V at 600 mA
- Up to 96% Efficiency
- 2.1-MHz PWM Switching Frequency
- PWM-to-PFM Automatic Mode Change
Under Low Loads - ±3% Output Voltage Accuracy
- Automatic Soft Start
- Programmable VOUT from:
- Linear Regulators (LDO)
- Programmable VOUT of 1 V to 3.5 V
(except JJ11, FX6W, and JX6X options) - 300-mA Output Current
- 30-mV (typical) Dropout
- Create a Custom Design Using the LP3907 With the WEBENCH® Power Designer
- Programmable VOUT of 1 V to 3.5 V
Beschreibung von LP3907
The LP3907 device is a multi-function, programmable power management unit (PMU) optimized for low-power FPGAs, microprocessors, and DSPs. This device integrates two highly efficient 1-A, 600-mA step-down DC-DC converters with dynamic voltage scaling (DVS), two 300-mA linear regulators, and a 400-kHz I2C interface to allow a host controller access to the internal control registers of the device. The LP3907 additionally features programmable power-on sequencing.
Features include programmable power-on sequencing, communication control (I2C), dynamic voltage scaling, overcurrent protection, Power Good, synchronous rectification, thermal shutdown, and undervoltage lockout. For applications requiring light loads, the high-efficiency synchronous switching buck regulators enter PFM mode and operate with reduced switching frequency and supply current to maintain high efficiency at very light loads.