BD95601MUV-LBE2

Datasheet 4.5V to 25V Input 1ch Synchronous Buck DC /DC Controller BD95601MUV-LB General Description Key Specifications This is the product guarantees long time support in VIN Input Voltage Range 4.5V to 25V industrial market. VCC Input Voltage Range 4.5V to 5.5V VDD Input Voltage Range 4.5V to 5.5V BD95601MUV-LB is a high current buck regulator that Output Voltage Range 0.75V to 2.0V produces low output voltage (0.75V to 2.0V) from a wide Standby Current 0A (Typ) input voltage range (4.5V to 25V).High efficiency is Operating Temperature Range -10C to +85C realized using external N channel MOSFETs. 3 TM Using H Reg , Rohms advanced proprietary control Package W(Typ) x D(Typ) x H(Max) method that uses constant on-time control to provide VQFN020V4040 4.00mm x 4.00mm x 1.00mm ultra-high transient responses to load changes. SLLM (Simple Light Load Mode) technology is added to improve efficiency with light loads giving high efficiency over a wide load range. Soft start functionality, short circuit protection with timer latch, over current protection and tracking are all included features. This switching regulator was designed for low voltage high current power supplies. Features Long Time Support Product for Industrial Applications. Adjustable Light Load and Selectable Continuous Modes. Multifunctional Protection Circuits. VQFN020V4040 -Thermal Shut down (TSD). -Under Voltage Lock Out (UVLO). -Over Current Protection (OCP). -Over Voltage Protection (OVP). Applications -Short Circuit Protection (SCP). FPGA, POL application. Adjustable Soft Start. Mobile PC, Desktop PC, LCD-TV, Digital Components Power Good Output. etc. 200kHz to 500kHz Switching Frequency. Industrial Equipment. Typical Application Circuit +12V REG1 5V PG 1 C4 R6 PG 2 20 19 18 17 16 EN 1 C1 SS HG Q1 1V 1 15 EN 1MGT 1VMGT EN 1.2 2 EN/SLLM SW 14 L1 1.2V EN 1.35/1.5 U1 R1 1.35/1.5V C8 EN 1.8 R13 3 ILIM BD95371MUV VDD 13 1.8V BD95601MUV-LB EN 2 R2 2V Q2 4 VCC LG 12 5 FB PGND 11 6 7 8 9 10 R12 R11 GND PGND Figure 1. Application Circuit Product structure : Silicon monolithic integrated circuit This product has no designed protection against radioactive rays www.rohm.co.jp TSZ02201-0A1A0A900210-1-2 2013 ROHM Co., Ltd. All rights reserved. 1/22 TSZ2211114001 30.May.2017 Rev.004 R18 R4 R3 C2 JP1 R20 VOUT GND R10 FREQ PGOOD R5 R8 C6 FS OUT R7 IS- VIN C5 C7 IS+ BOOT C3 C10 C11 C12 C13 C14BD95601MUV-LB Pin Configuration 15 14 13 12 11 BOOT 16 10 Is+ VIN 17 9 Is- 8 FS OUT 18 PGOOD 19 7 FREQ 6 VOUT GND 20 1 2 3 4 5 Figure 2. Pin Configuration Pin Description Pin No. Pin Name Function Soft Start Time input. The rise time is set by a capacitor connected between SS and 1 SS ground. At startup, a fixed current flows into the SS capacitor. Output voltage is controlled until the SS input reaches the reference voltage of 0.75V. Enable and Mode Selection Input. Voltage on this input selects the operating mode. 2 EN/SLLM Standby Mode: < 0.8V Continuous Mode: 2.3V 3.8V Light Load Mode: 4.2V 5.5V Coil Current Limit input. 3 ILIM A 100K resistor should be connected between this input and ground. 4 VCC IC Internal Circuits Power input. 5 FB Output Voltage Sense input. A resistor divider to this input sets the output voltage. 6 VOUT Output Voltage Monitor input. 7 FREQ Current Sense Amplifier Output. Frequency input. A resistor sets the switching frequency. The frequency can be set from 8 FS 200kHz to 500kHz. 9 Is- Input Current Sense Amplifier input. FREQ pin is output. Output Current Sense Amplifier input. If the voltage between this pin and VOUT pin 10 Is+ reaches the specified voltage level (setting at ILIM pin), the switching is turned OFF. 11 PGND Ground pin for Low-side FET driver. This is the pin to drive the gate of the Low-side FET. This voltage swings between VDD 12 LG and PGND. High-speed gate driving for the Low-side FET is achieved using an output MOS (3 when LG is high, 0.5 when LG is low.). This is the power supply pin to drive the Low-side FET. 13 VDD It is recommended that 10F bypass capacitor be used to compensate for peak current during the FET on/off transition. This is the ground pin for High-side FET. 14 SW The maximum absolute rating is 30V from ground. This is the pin to drive the gate of the High-side FET. The status of the switching swings 15 HG between BOOT and SW. High-speed gate driving for High-side FET is achieved using an output MOS (3 when HG is high, 2 when HG is low). This is the power supply pin to drive the High-side FET. 16 BOOT The maximum absolute ratings are 35V from ground and 7V from SW. The switching waveform sweeps from (VIN+VDD) to VDD by BOOT operation. 3 TM This is the pin for H Reg control. It determines necessary on-time by monitoring input 17 VIN voltage. It is recommended to connect 1k / 0.1F CR filter. This is the output pin of output voltage control amp. Please connect a resistor and 18 OUT capacitor to ground in series. It is recommended that a 0.01F capacitor be established in normal operation. Power Good output. This pin outputs a high-level when the FB pin voltage is above 63% 19 PGOOD of the reference voltage. This is an open drain pin and therefore requires an external pull-up. 20 GND Ground pin of control circuit. It is the same as FIN potential. FIN FIN Backside thermal pad. Please connect to the Ground. www.rohm.co.jp TSZ02201-0A1A0A900210-1-2 2013 ROHM Co., Ltd. All rights reserved. 2/22 TSZ2211115001 30.May.2017 Rev.004 SS HG EN/SLLM SW ILIM VDD VCC LG FB PGND