EN6347QI3 ENPIRION [Enpirion, Inc.], EN6347QI3 Datasheet
![no-image](/images/no-image-200.jpg)
EN6347QI3
Related parts for EN6347QI3
EN6347QI3 Summary of contents
Page 1
Description The EN6347QI is a Power System on a Chip (PowerSoC) DC-DC converter. It integrates MOSFET switches, small-signal compensation, and the inductor in an advanced 4mm x 7mm QFN package. The EN6347QI is specifically designed to meet the precise voltage ...
Page 2
... Figure 2: Typical Application Schematic (PWM mode) Ordering Information Temp Rating Part Number (°C) EN6347QI -40 to +85 EN6347QI3 -40 to +85 EN6347QI-E QFN Evaluation Board Pin Description PIN NAME NO CONNECT – These pins are internally connected to the common switching node of the 1-2, 12, NC(SW) internal MOSFETs. They are not to be electrically connected to any external signal, ground, 34-38 or voltage ...
Page 3
Absolute Maximum Ratings CAUTION: Absolute Maximum ratings are stress ratings only. recommended operating conditions is not implied. Stress beyond the absolute maximum ratings may impair device life. Exposure to absolute maximum rated conditions for extended periods may affect device reliability. ...
Page 4
... Shut-Down Supply Current I S Operating Quiescent I Q Current Feedback Pin Voltage EN6347QI V FB EN6347QI3 Feedback Pin Voltage EN6347QI V FB EN6347QI3 Feedback pin Input I FB Leakage Current (Note 1) V Rise Time (Note 1) t OUT RISE Soft Start Capacitor Range C SS_RANGE Output Drop Out V Voltage ...
Page 5
PARAMETER SYMBOL POK Output low Voltage V POKL POK Output Hi Voltage V POKH POK pin V leakage OH I POKL current (Note 1) LLM Engage Headroom LLM Logic Low V LLM_LO (LLM/SYNC PIN) LLM Logic High V LLM_HI (LLM/SYNC ...
Page 6
MHz BW limit PWM Output Ripple 5.0V OUT C = 22PF 47PF/1206 + 10uF/0805 IN OUT LLM Output Ripple 5.0V 0.1A 22PF 2x47PF/1206 ...
Page 7
PWM Load Transient 5.0V Ch. Ch. 0l4A OUT OUT C = 22PF 47PF/1206 + 10µF/0805 IN OUT Power Up/Down at No Load 47nF soft-start capacitor, C Ch.1: ENABLE, ...
Page 8
Functional Block Diagram Functional Description Synchronous Buck Converter The EN6347QI is a programmable power supply with integrated power MOSFET switches and integrated inductor. The nominal input voltage range is 2.5V to 6.6V. The output programmed using an external resistor divider ...
Page 9
Additional Features: x The switching frequency can be phase- locked to an external clock to eliminate or move beat frequency tones out of band. x Soft-start circuit, allowing controlled startup when the converter is initially powered up. The soft start ...
Page 10
Light Load Mode (LLM) Operation The EN6347QI uses a proprietary light load mode to provide high efficiency at low output currents. When the LLM/SYNC pin is high, the device is in automatic LLM “Detection” mode. When the LLM/SYNC pin is ...
Page 11
Thermal Overload Protection Thermal shutdown circuit will disable device operation when the Junction temperature exceeds approximately 150ºC. After a thermal shutdown event, when temperature drops by approx 20ºC, the converter will re-start with a normal soft-start. Input Under-Voltage Lock-Out Internal ...
Page 12
Typical PWM Ripple Voltages Typical Output Ripple (mVp-p) Output Capacitor (as measured on EN6347QI Configuration Evaluation Board µF 47 µ µF * Note: 20 MHz BW limit Recommended Output Capacitors Description MFG 47µF, 6.3V, 20% ...
Page 13
The value shown in JA Characteristics table on page 3 is for free convection with the device heat sunk (through the thermal pad copper plated four-layer PC board with a full ground and a full power plane following ...
Page 14
Recommendation 6: AVIN is the power supply for the internal small-signal control circuits. It should be connected to the input voltage at a quiet point. In Figure 7 this connection is made at the input capacitor close to the V ...
Page 15
Recommended PCB Footprint ¤Enpirion 2011 all rights reserved, E&OE 05991 Figure 9: EN6347QI Package PCB Footprint 15 10/04/2011 EN6347QI Dimensions in mm www.enpirion.com Rev: B ...
Page 16
Package and Mechanical Contact Information Enpirion, Inc. Perryville III Corporate Park 53 Frontage Road - Suite 210 Hampton, NJ 08827 USA Phone: +1.908.894.6000 Fax: +1.908.894.6090 Enpirion reserves the right to make changes in circuit design and/or specifications at any time ...