MC34700: 9-18V Four Output, Multi-Purpose Switching Power Supply
The NXP® MC34700 is a compact, high-efficiency power supply with on-chip power MOSFETs that features three step-down switching regulators and one low dropout linear regulator.
NXP® MC34700 Linear Regulator Block Daigramv
NXP® MC34700 Product Image
特性
- Three switching regulators: 2 synchronous and 1 non-synchronous
- One Low Dropout Linear Regulator
- Output Current Capability: - 1.5 A continuous on Channel 1 - 1.25 A continuous on Channels 2 and 3 - 400 mA continuous on Channel 4
- Internal Power MOSFETs on All Channels
- Voltage Feedforward on Channel 1
- ±1.5% Output Voltage Accuracy on All Channels
- Cycle-by-Cycle Current Limit and Short-Circuit Protection
- Fixed 800 kHz Switching Frequency
- Internal Soft-Start
- Overvoltage and Undervoltage Protection
- Overtemperature Protection
- Open-Drain Power-Good Output Signal
- Separate Active-High Enable Input for Each Channel
- This product is included in NXP®.s product longevity program, with assured supply for a minimum of 10 years after launch
Recommended Documentation (6)
| Name/Description | Type | Modified Date |
|---|---|---|
| MC34700, 9 to 18V, Quad Output Integrated MOSFET Power Supply (REV 5.0) PDF (1.6 MB) MC34700 | Data Sheets | 12 Oct 2009 |
| MC34700FS, 9.0 to 18V quad-output power supply (REV 1) PDF (169.1 kB) MC34700FS | Fact Sheets | 25 Jul 2008 |
| AN1902, Assembly Guidelines for QFN (Quad Flat No-Lead) and DFN (Dual Flat No-Lead) Packages - Application Note (REV 7.0) PDF (3.6 MB) AN1902 | Application Notes | 13 Oct 2014 |
| Low Power Management Unit with MC34700 (REV 0) PDF (685.3 kB) AN3592 | Application Notes | 06 Feb 2008 |
| AN4066, Determining the Maximum Output Current for the MC34700 Switching Regulators (REV 1.0) PDF (224.5 kB) AN4066 | Application Notes | 19 Nov 2010 |
| AN4067, Selecting L and C Components in the Power Stage of the MC34700 Switching Regulators (REV 1.0) PDF (257.8 kB) AN4067 | Application Notes | 19 Nov 2010 |
Data Sheets (1)
| Name/Description | Modified Date |
|---|---|
| MC34700, 9 to 18V, Quad Output Integrated MOSFET Power Supply (REV 5.0) PDF (1.6 MB) MC34700 | 12 Oct 2009 |
Application Notes (4)
| Name/Description | Modified Date |
|---|---|
| AN1902, Assembly Guidelines for QFN (Quad Flat No-Lead) and DFN (Dual Flat No-Lead) Packages - Application Note (REV 7.0) PDF (3.6 MB) AN1902 | 13 Oct 2014 |
| AN4066, Determining the Maximum Output Current for the MC34700 Switching Regulators (REV 1.0) PDF (224.5 kB) AN4066 | 19 Nov 2010 |
| AN4067, Selecting L and C Components in the Power Stage of the MC34700 Switching Regulators (REV 1.0) PDF (257.8 kB) AN4067 | 19 Nov 2010 |
| Low Power Management Unit with MC34700 (REV 0) PDF (685.3 kB) AN3592 | 06 Feb 2008 |
Users Guides (1)
| Name/Description | Modified Date |
|---|---|
| KIT34700EPEVBE, Evaluation Board - User Guide (REV 1.0) PDF (569.3 kB) KT34700UG | 15 Jul 2008 |
Fact Sheets (1)
| Name/Description | Modified Date |
|---|---|
| MC34700FS, 9.0 to 18V quad-output power supply (REV 1) PDF (169.1 kB) MC34700FS | 25 Jul 2008 |
Ordering Information
| Product | Status | Status | Device Function | Budgetary Price excluding tax(US$) | SafeAssure Functional Safety | Package Type and Termination Count | Num. of Linear/LDO Regulators | Number of Regulators-Buck Switching | Number of Regulators-Boost Switching | Output Voltage | Output Current (A) | Supply Voltage (Min-Max) (V) | Interface and Input Control | Communication Protocol | Ambient Operating Temperature (Min-Max) (°C) | Protection | Diagnostics | Additional Features - Power Management | Battery Charger | RoHS | Additional Features - Safety | Additional Features-Analog |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MC34700EP | End of Life | Switching Regulators, Linear Regulators | 1K @ US$0.89 | QFN 32 | 1 | 3 | 0 | 3.6 ADJ down, 5.25 ADJ down, 3.6 ADJ down, 3.6 ADJ down | 0.4, 1.5, 1.25, 1.25 | 1.5 to 18 | Parallel | -40 to 85 | Undervoltage Detection, Short Circuit, Overvoltage, Overcurrent | Status Flag | Power Sequencing, Disable DC - DC | [object Object] | ||||||
| MC34700EPR2 | End of Life | Switching Regulators, Linear Regulators | 1K @ US$0.89 | QFN 32 | 1 | 3 | 0 | 3.6 ADJ down, 5.25 ADJ down, 3.6 ADJ down, 3.6 ADJ down | 0.4, 1.5, 1.25, 1.25 | 1.5 to 18 | Parallel | -40 to 85 | Undervoltage Detection, Short Circuit, Overvoltage, Overcurrent | Status Flag | Power Sequencing, Disable DC - DC | [object Object] |
Package Information
| Package Description | Outline Version | Packing | Product Status | Part Number | Chemical Content | RoHS / Pb FreeChina RoHS Lookup | MSL | PPT (°C) |
|---|---|---|---|---|---|---|---|---|
| QFN 32 5*5*1 P0.5 | 98ASA00473D | MPQ - 2450 BRICKPOQ - 2450 BRICK | End of Life | MC34700EP | MC34700EP.pdf |   | 3 | 260 |
| MPQ - 5000 REELPOQ - 5000 BOX | End of Life | MC34700EPR2 | MC34700EPR2.pdf | | 3 | 260 |
