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Part Number: MC34701
Description: The 34701 provides the means to efficiently supply the Freescale Power QUICC™ I, II, and other fa...
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MC34701
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DataSheet
General Description
MC34701 General Description
The 34701 provides the means to efficiently supply the Freescale Power QUICC™ I, II, and other families of Freescale microprocessors and DSPs. The 34701 incorporates a highperformance switching regulator, providing the direct supply for the microprocessor’s core, and a low dropout (LDO) linear regulator control circuit providing the microprocessor I/O and bus voltage.
The switching regulator is a high-efficiency synchronous buck regulator with integrated N-channel power MOSFETs to provide protection features and to allow space-efficient, compact design. The 34701 incorporates many advanced features; e.g., precisely maintained up/down power sequencing, ensuring the proper operation and protection of the CPU and power system.
MC34701 Maximum Ratings
| Ratings | Symbol | Value | Unit |
| ELECTRICAL RATINGS | |||
| Supply Voltage | VIN1, VIN2 | -0.3 to 7.0 | V |
| Switching Node Voltage | VSW | -1.0 to 7.0 | V |
| Buck Regulator Bootstrap Input Voltage (BOOT - SW) | VIN(BOOT) | -0.3 to 8.5 | V |
| Boost Regulator Output Voltage | VBST | -0.3 to 8.5 | V |
| Boost Regulator Drain Voltage | VBD | -0.3 to 9.5 | V |
| RST Drain Voltage | VRST | -0.3 to 7.0 | V |
| Enable Terminal Voltage at EN1, EN2 | VEN | -0.3 to 7.0 | V |
| Logic Terminal Voltage at SDA, SCL | VLOG | -0.3 to 7.0 | V |
| Analog Terminal Voltage LDO, VOUT, RST LDRV, LCMP, CS |
VOUT VLIN |
-0.3 to 7.0 -0.3 to 8.5 |
V |
| Terminal Voltage at CLKSEL, ADDR, RT, FREQ, VDDI, CLKSYN, INV, LFB |
VLOGIC | -0.3 to 3.6 | V |
| ESD Voltage (1) Human Body Model Machine Model |
VESD | ±2000 ±200 |
V |
| Thermal Rating | |||
| Storage Temperature | TSTG | -65 to 150 | °C |
| Lead Soldering Temperature (2) | TSOLDER | 260 | °C |
| Maximum Junction Temperature | TJMAX | 125 | °C |
| Thermal Resistance Junction to Ambient (Single Layer) (3), (4) Junction to Ambient (Four Layers) (3), (4) |
RJA | 70 55 |
°C/W |
| Thermal Resistance, Junction to Base (5) | RJB | 18 | °C/W |
| Operational Package Temperature (Ambient Temperature) | TA | -40 to 85 | °C |
1. ESD1 testing is performed in accordance with the Human Body Model (CZAP=100 pF, RZAP=1500 ), ESD2 testing is performed in
accordance with the Machine Model (CZAP=200 pF, RZAP=0 ), and the Charge Device Model.
2. Lead soldering temperature limit is for 10 seconds maximum duration.
3. Junction temperature is a function of on-chip power dissipation, package thermal resistance, mounting site (board) temperature,
ambient temperature, air flow, power dissipation of other components on the board and board thermal resistance.
4. Per JEDEC JESD51-6 with the board horizontal
5. Thermal resistance between the die and the printed circuit board per JEDEC JESD51-8. Board temperature is measured on the top
surface of the board near the package.
MC34701 Features
· Operating Voltage from 2.8 V to 6.0 V
· High-Accuracy Output Voltages
· Fast Transient Response
· Switcher Output Current Up to 1.5 A
· Undervoltage Lockout and Overcurrent Protection
· Enable Inputs and Programmable Watchdog Timer
· Voltage Margining via I2C™ Bus
· Reset with Programmable Power-ON Delay
· Pb-Free Packaging Designated by Suffix Code EK
I2C is a trademark of Philips Corporation.
· High-Accuracy Output Voltages
· Fast Transient Response
· Switcher Output Current Up to 1.5 A
· Undervoltage Lockout and Overcurrent Protection
· Enable Inputs and Programmable Watchdog Timer
· Voltage Margining via I2C™ Bus
· Reset with Programmable Power-ON Delay
· Pb-Free Packaging Designated by Suffix Code EK
I2C is a trademark of Philips Corporation.
MC34701 Connection Diagram
MC34701
PDF/DataSheet Download
- Datasheet: MC34701
- File Size: 1001574 KB
- Manufacturer: FREESCALE
- Click here to Download
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