Power Management

BD9701

Rohm

Simple Step-down Switching Regulators with Built-in Power MOSFET

Manufacturer: Rohm

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1/16 www.rohm.com 2009.04- Rev.B © 2009 ROHM Co., Ltd. All rights reserved. Single-chip Type with Built-in FET Switching Regulator Series Simple Step-down Switching Regulators with Built-in Power MOSFET BD9701FP/CP-V5/T/T-V5, BD9703FP/CP -V5/T/T-V5,BD9702CP-V5/T/T-V5

Description The BD9701/BD9703/BD9702 are single-channel step-down switching regulator capable of PWM operation. The Pch MOS FET is built in for high efficiency in small load area.Lower electricity consumption of operating current 4mA (Typ) and stand-by current 0uA(Typ) is realized by adopting Bi-CMOS process.
Features 1) Maximum switching current: 1.5A(BD9701/BD9703), 3A(BD9702) 2) Built-in Pch FET ensures high efficiency 3) Output voltage adjustable via external resistors 4) High switching frequency: 100kHz (BD9701), 300kHz(BD9703), 110kHz(BD9702) 5) Overcurrent and thermal shutdown protection circuits built in 6) ON/OFF control via STBY pin 7) Small surface mount TO252-5 package (only BD9701FP, BD9703FP)
Applications TVs, printers, DVD players, projectors, gaming devices, PCs, car audio/navigation systems, ETCs, communication equipment, AV products, office equipment, industrial devices, and more.
L i n e U p BD9701FP/CP-V5/T/T-V5 BD9703FP/CP -V5/T/T-V5 BD9702CP-V5/T/T-V5 Output Current 1.5A 3.0A Input Voltage 8 or Vo+3 ～ 36V Switching Frequency 100kHz (fixed) 300kHz (fixed) 110kHz (fixed) External Synchronization × Stand-by Function ○ Operating Temperature -40 ～ +85 ℃ No.09027EBT01

Absolute Maximum Ratings (Ta＝25℃) Parameter Symbol Ratings Unit Supply Voltage (VCC-GND) VCC 36 V STBY-GND V STBY 36 V OUT-GND V O 36 V INV-GND V INV 10 V Maximum Switching Current BD9701/BD9703 Iout 1.5 A BD9702 3 Power Dissipation TO252 Pd 0.8 (*1) W TO220 2(*2) Operating Temperature Topr -40～+85 ℃ Storage Temperature Tstg -55～+150 ℃ *1 Without external heat sink, the power dissipation reduces by 6.4mW/℃ over 25℃. *2 Without external heat sink, the power dissipation reduces by 16.0mW/℃ over 25℃. Reduced by 160mW/℃, when mounted on Infinity size heatsink.
Operating Conditions(Ta=-40～+85℃) Parameter Symbol Limit Unit MIN TYP MAX Input Voltage VCC 8.0 or Vo+3 (*3) - 35.0 V Output Voltage Vo 1.0 - 32 V *3The minimum value of an input voltage is the higher either 8.0V or Vo+3
Electrical Characteristics ○BD9701FP/CP-V5/T/T-V5 (Unless otherwise noted, Ta=25℃,VCC=12V,Vo=5V,STBY=3V) Parameter Symbol Limit Unit Conditions MIN TYP MAX Output ON Resistance Ron - 1.0 1.5 Ω design guarantee Efficiency η - 86 - % Io ＝0.5A design guarantee Switching Frequency fosc 80 100 120 kHz Load Regulation ΔVOLOAD - 10 40 mV VCC=20V,Io=0.5～1.5A Line Regulation ΔVOLINE - 40 100 mV VCC=10 ～30V,Io=1.0A Over Current Protection Limit Iocp 1.6 - - A INV Pin Threshold Voltage VINV 0.98 1.00 1.02 V INV Pin Threshold Voltage Thermal Variation ΔVINV - ±0.5 - % Tj=0 ～85℃ design guarantee INV Pin Input Current IINV - 1 - μA VINV=1.0V STBY Pin Threshold Voltage ON VSTBYON 2.0 - 36 V OFF VSTBYOFF -0.3 - 0.3 V STBY Pin Input Current Istby 5 25 50 μAS T B Y = 3 V Circuit Current Icc - 4 12 mA Stand-by Current Ist - 0 5 μAS T B Y ＝0V This product is not designed to be resistant to radiation.

Electrical Characteristics ○BD9703FP/CP-V5/T/T-V5 (Unless otherwise noted, Ta=25℃,VCC=12V,Vo=5V,STBY=3V) Parameter Symbol Limit Unit Conditions MIN TYP MAX Output ON Resistance Ron - 1.0 1.5 Ω design guarantee Efficiency η - 86 - % Io ＝0.5A design guarantee Switching Frequency fosc 270 300 330 kHz Load Regulation ΔVOLOAD - 10 40 mV VCC=20V,Io=0.5～1.5A Line Regulation ΔVOLINE - 40 100 mV VCC=10 ～30V,Io=1.0A Over Current Protection Limit Iocp 1.6 - - A INV Pin Threshold Voltage VINV 0.98 1.00 1.02 V INV Pin Threshold Voltage Thermal Variation ΔVINV - ±0.5 - % Tj=0 ～85℃ design guarantee INV Pin Input Current IINV - 1 - μA VINV=1.0V STBY Pin Threshold Voltage ON VSTBYON 2.0 - 36 V OFF VSTBYOFF -0.3 - 0.3 V STBY Pin Input Current Istby 5 25 50 μAS T B Y = 3 V Circuit Current Icc - 5 12 mA Stand-by Current Ist - 0 5 μAS T B Y ＝0V
Electrical Characteristics ○BD9702FP/CP-V5/T/T-V5 (Unless otherwise noted, Ta=25℃,VCC=12V,Vo=5V,STBY=3V) Parameter Symbol Limit Unit Conditions MIN TYP MAX Output ON Resistance Ron - 0.5 1.5 Ω design guarantee Efficiency η - 86 - % Io ＝1A design guarantee Switching Frequency fosc 88 110 132 kHz Load Regulation ΔVOLOAD - 10 40 mV VCC=20V,Io=1 ～3A Line Regulation ΔVOLINE - 40 100 mV VCC=10 ～30V,Io=1.0A Over Current Protection Limit Iocp 3.2 - - A INV Pin Threshold Voltage VINV 0.98 1.00 1.02 V INV Pin Threshold Voltage Thermal Variation ΔVINV - ±0.5 - % Tj=0 ～85℃ design guarantee INV Pin Input Current IINV - 1 - μA VINV=1.0V STBY Pin Threshold Voltage ON VSTBYON 2.0 - 36 V OFF VSTBYOFF -0.3 - 0.3 V STBY Pin Input Current Istby 5 25 50 μAS T B Y = 3 V Circuit Current Icc - 4 12 mA Stand-by Current Ist - 0 5 μAS T B Y ＝0V

BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5 Technical Note 4/16 www.rohm.com 2009.04- Rev.B © 2009 ROHM Co., Ltd. All rights reserved. 100 10 100 1000 OUTPUT CURRENT : IOUT[A] EFFICIENCY η: [%] 0.5 1.5 2.5 3.5 00 . 511 . 52 SWITCHING CURRENT : ISW[A] OUTPUT VOLTAGE : VDS[V] 0.980 0.990 1.000 1.010 1.020 -10 10 30 50 70 90 AMBIENT TEMPERATURE : Ta [℃] INV THRESHOLD VOLTAGE : VINV[V]

Characteristic Data ○BD9701FP/CP-V5/T/T-V5 01234 OUTPUT CURRENT IOUT : [A] OUTPUT VOLTAGE : VO [V] 100 105 110 - 1 0 1 03 05 07 09 0 AMBIENT TEMPERATURE : Ta [℃] OSC FREQUENCY : FOSC [ｋHz] 4.9 4.95 5.05 5.1 0 200 400 600 800 1000 OUTPUT CURRENT : IOUT[A] OUTPUT VOLTAGE : VO [V] 4.900 4.950 5.000 5.050 5.100 0 1 02 03 04 0 INPUT VOLTAGE : VCC [V] OUTPUT VOLTAGE : VO [V] VCC=30V VCC=20V VCC=10V 100 105 110 0 1 02 03 04 0 INPUT VOLTAGE : VCC [V] OSC FREQUENCY : FOSC [ｋHz] Fig.1 EFFICIENCY-LOAD CURRENT Fig.2 OCP VCC=20V Fig.3 fosc-Ta Fig.4 OUTPUT VOLTAGE-LOAD CURRENT Fig.5 OUTPUT VOLTAGE-INPUT VOLTAGE (Vo=5V,Ro=5ohm) Fig.6 CIRCUIT CURRENT-INPUT VOLTAGE NO LOAD Fig.7 VOUT～OUT VOLTAGE-DRAIN CURRENT Fig.8 fosc-INPUT VOLTAGE Fig.9 INV THRESHOLD VOLTAGE-Ta 0.5 1.5 2.5 3.5 4.5 10 15 20 25 30 35 INPUT VOLTAGE : VCC [V] CIRCUIT CURRENT ; [mA]

BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5 Technical Note 5/16 www.rohm.com 2009.04- Rev.B © 2009 ROHM Co., Ltd. All rights reserved. 100 10 100 1000 10000 OUTPUT CURRENT : IOUT[A] EFFICIENCY η: [%] 0123456 OUTPUT CURRENT : IOUT[A] OUTPUT VOLTAGE : VO [V] 4.90 4.95 5.00 5.05 5.10 0 500 1000 1500 2000 2500 3000 OUTPUT CURRENT : IOUT[A] OUTPUT VOLTAGE : VO [V] VCC=10V VCC=20V VCC=30V 4.90 4.95 5.00 5.05 5.10 01 0 2 0 3 0 4 0 INPUT VOLTAGE : VCC [V] OUTPUT VOLTAGE : VO [V] 0.0 0.5 1.0 1.5 2.0 0 0.5 1 1.5 2 2.5 3 SWITCHING CURRENT : ISW[A] OUTPUT VOLTAGE : VDS[V] 100 105 110 115 120 0 1 02 03 04 0 INPUT VOLTAGE : VCC [V] OSC FREQUENCY : FOSC [ｋHz] 0.98 0.99 1.00 1.01 1.02 -10 10 30 50 70 90 AMBIENT TEMPERATURE : Ta [℃] INV THRESHOLD VOLTAGE : VINV[V] 100 105 110 115 120 - 10 10 30 50 70 90 [kHz] OSC FREQUENCY : FOSC AMBIENT TEMPERATURE : Ta [℃]

Characteristic Data ○BD9702FP/CP-V5/T/T-V5 10 15 20 25 30 35 INPUT VOLTAGE : VCC [V] CIRCUIT CURRENT ; [mA] Fig.10 EFFICIENCY-LOAD CURRENT Fig.11 OCP VCC=20V Fig.12 fosc-Ta Fig.13 OUTPUT VOLTAGE-LOAD CURRENT Fig.14 OUTPUT VOLTAGE-INPUT VOLTAGE (Vo=5V,Ro=5ohm) Fig.15 CIRCUIT CURRENT- INPUT VOLTAGE NO LOAD Fig.16 VOUT～OUT VOLTAGE-DRAIN CURRENT Fig.17 fosc-INPUT VOLTAGE Fig.18 INV THRESHOLD VOLTAGE-Ta

BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5 Technical Note 6/16 www.rohm.com 2009.04- Rev.B © 2009 ROHM Co., Ltd. All rights reserved. 10 15 20 25 30 35 INPUT VOLTAGE : VCC [V] CIRCUIT CURRENT ; [mA]

Characteristic Data ○BD9703FP/CP-V5/T/T-V5 100 10 100 1000 OUTPUT CURRENT : IOUT[A] EFFICIENCY η: [%] 01234 OUTPUT CURRENT : IOUT[A] OUTPUT VOLTAGE : VO [V] 270 285 300 315 330 -10 10 30 50 70 90 AMBIENT TEMPERATURE : Ta [℃] OSC FREQUENCY : FOSC [ｋHz] 4.9 4.95 5.05 5.1 0 200 400 600 800 1000 OUTPUT CURRENT : IOUT[A] OUTPUT VOLTAGE : VO [V] VCC=30V VCC=20V VCC=10V 4.90 4.95 5.00 5.05 5.10 0 1 02 03 04 0 INPUT VOLTAGE : VCC [V] OUTPUT VOLTAGE : VO [V] 0.5 1.5 SWITCHING CURRENT : ISW[A] OUTPUT VOLTAGE : VDS[V] 270 285 300 315 330 0 1 02 03 04 0 INPUT VOLTAGE : VCC [V] OSC FREQUENCY : FOSC [ｋHz] 0.98 0.99 1.00 1.01 1.02 -10 10 30 50 70 90 AMBIENT TEMPERATURE : Ta [℃] INV THRESHOLD VOLTAGE : VINV[V] Fig.19 EFFICIENCY-LOAD CURRENT Fig.20 OCP VCC=20V Fig.21 fosc-Ta Fig.22 OUTPUT VOLTAGE-LOAD CURRENT Fig.23 OUTPUT VOLTAGE-INPUT VOLTAGE (Vo=5V,Ro=5ohm) Fig.24 CIRCUIT CURRENT-INPUT VOLTAGE NO LOAD Fig.25 VOUT～OUT VOLTAGE-DRAIN CURRENT Fig.26 fOSC-INPUT VOLTAGE Fig.27 INV THRESHOLD VOLTAGE-Ta

Block Diagram BD9701FP/CP-V5/T/T-V5, BD9703FP/CP-V5/T-V5, BD9702CP-V5/T/T-V5
Pin Description (*2)FIN is assigned in the case of TO252-5. Pin No. Pin Name Function

1 VCC Input Power Supply Pin

2 OUT Internal Pch FET Drain Pin

3,FIN(*2) GND Ground

4 INV Output Voltage Feedback Pin

5 STBY ON/OFF Control Pin

TO220FP-5(V5) Package Dimensions (mm) Fig.28 Block Diagram

Block Function Explanations ・VREF Generates the regulated voltage from VCC input, compensated for temperature. ・OSC Generates the triangular wave oscillation frequency using an internal resistors and capacitor. Used for PWM comparator input. ・Error AMP This block, via the INV pin, detects the resistor-divided output voltage, compares this with the reference voltage, then amplifies and outputs the difference. ・PWM COMP Outputs PWM signals to the Driver block, which converts the error amp output voltage to PWM form. ・DRIVER This push-pull FET driver powers the internal Pch MOSFET, which accepts direct PWM input. ・STBY Controls ON/OFF operation via the STBY pin. The output is ON when STBY is High. ・Thermal Shutdown (TSD) This circuit protects the IC against thermal runaway and damage due to excessive heat. A thermal sensor detects the junction temperature and switches the output OFF once the temperature exceeds a threshold value (175deg). Hysteresis is built in (15deg) in order to prevent malfunctions due to temperature fluctuations. ・Over Current Protection (OCP) The OCP circuit detects the voltage difference between VCC and OUT by measuring the current through the internal Pch MOSFET and switches the output OFF once the voltage reaches the threshold value. The OCP block is a self-recovery type (not latch).
Timing Chart Error AMP OUTPUT OUTPIN OSC (Internal Oscillation Wave) OUTPUT VCC PIN VOLTAGE WAVE VOLTAGE WAVE VOLTAGE WAVE Fig.29 Timing Chart

Notes for PCB layout Fig.30 Layout
Place capacitors between VCC and Ground, and the Schottky diode as close as possible to the IC to reduce noise and maximize efficiency.
Connect resistors between INV and Ground, and the output capacitor filter at the same Ground potential in order to stabilize the output voltage.
Application component selection and settings Inductor L1 If the winding resistance of the choke coil is too high, the efficiency may deteriorate. As the overcurrent protection operates over minimum 1.6A (BD9701FP/CP-V5/T/T-V5, BD9703FP/CP-V5/T-V5) or 3.2A minimum (BD9701CP-V5/T/T-V5), attention must be paid to the heating of the inductor due to overload of short-circulated load. Note that the current rating for the coil should be higher than IOUT(MAX)＋⊿IL. Iout (MAX): maximum load current If you flow more than maximum current rating, coil will become overload, and cause magnetic saturation, and those account for efficiency deterioration. Select from enough current rating of coil which doesn’t over peak current. L1:inductor value, VCC:maximum input voltage, VOUT:output voltage, ⊿IL:coil ripple current value, fosc:oscillation frequency Shottky Barrier Diodes D1 A Schottky diode with extremely low forward voltage should be used. Selection should be based on the following guidelines regarding maximum forward current, reverse voltage, and power dissipation: ・The maximum current rating is higher than the combined maximum load current and coil ripple current (⊿I L). ・The reverse voltage rating is higher than the VIN value. ・Power dissipation for the selected diode must be within the rated level. The power dissipation of the diode is expressed by the following formula: Pdi=Iout(MAX)×Vf×(1-VOUT/VCC) Iout (MAX): maximum load current, Vf: forward voltage, VOUT: output voltage, VCC: input voltage Capacitor C1,C2,C3,C4,C5 As large ripple currents flow across C1 and C3 capacitors, high frequency and low impedance capacitor for a switching regulator must be used. The ceramic capacitor C2 must be connected. If not, noise may cause an abnormal operation. If the ripple voltage of input and output is large, C4 selected among ceramic , tantalum and OS capacitor with low ESR may decrease the ripple, however if the only low ESR capacitor is used, an oscillation or unstable operation may be caused. C5 is the capacitor for phase compensation and normally not used. If you need to improve the stability of feedback network, connect C5 between INV and OUTPUT. Feed back resistance R1,R2 The offset of output voltage is determined by both Feed back resistance and INV pin input current. VOUT=(R1+R2) VINV/R2 (VINV pin Threshold Votage) If Feed back resistance is high, the setting of output voltage will be move. Recommended : Resistance between INV pin and GND = less than 10kΩ. ⊿IL . = (VCC-VOUT) VOUT VCC fosc × × INV STBY R2 : 1kO R1 : 4kO VCC OUT GNDC2 5.0V D1 C3C4C1

Recommended Circuit (BD9701FP/CP-V5/T/T-V5) ＜Recommended Components (Example)＞ Inductor L1＝100μ H :CDRH127/LD (sumida) Schottky Diode D1 :RB050LA-40 (ROHM) Capacitor C1＝100 μF(50V) :Al electric capacitor UHD1H101MPT (nichicon) C2＝OPEN C3＝220 μF(25V) :Al electric capacitor UHD1E221MPT (nichicon) C4＝OPEN C5＝OPEN ＜Recommended Components example 2＞ Inductor L1＝100μ H :CDRH127/LD (sumida) Schotky Diode D1 :RB050LA-40 (ROHM) C a p a c i t o r C 1 ＝220μF(25V) :Al electric capacitor UVR1H221MPA (nichicon) C2＝1.0 μF(50V) :ceramic cap UMK212F 105ZG (TAIYO YUDEN) C3＝470 μF(16V) :Al electric capacitor UVR1E471MPA (nichicon) C4＝150 μF(20V) :OS capacitor 20SVP150M (SANYO) C3＝OPEN VCC STBY GND INV OUT 5.0V C5R1 : 4kΩ R2 : 1kΩ C3C4D1 C1C2 Fig.31 Recommended Circuit Output Voltage 5V : Application cicuit example

BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5 Technical Note 11/16 www.rohm.com 2009.04- Rev.B © 2009 ROHM Co., Ltd. All rights reserved. (BD9703FP/CP-V5/T/T-V5) ＜Recommended Components＞ Inductor L1＝47 μH :CDRH127/LD (sumida) Schotky Diode D1 :RB050LA-40 (ROHM) C a p a c i t o r C 1＝100μF(50V) :Al electric capacitor UHD1H101MPT (nichicon) C2＝2.2 μF(50V) :ceramic cap CM43X7R225K50A (KYOCERA) C3＝470 μF(25V) :Al electric capacitor UHD1E471MPT (nichicon) C 4 ＝OPEN C3＝OPEN (BD9702CP-V5/T/T-V5) ＜Recommended Components＞ Inductor L1＝47 μH :CDRH127/LD (sumida) Schotky Diode D1 :RB050LA-40 (ROHM) C a p a c i t o r C 1＝1000μF(50V) :Al electric capacitor UHD1H102MPT (nichicon) C2＝OPEN C3＝1000 μF(25V) :Al electric capacitor UHD1E102MPT (nichicon) C 4 ＝OPEN C3＝OPEN

Test Circuit I INVIcc Vcc OUT GND INV STBY Vcc SW4 SW5SW2 1 2 3 4 5 A Vo f 1kΩ A A V 2kΩ VINV ISTB VSTB SW6 Io Fig.32 Input Output Measurement Circuit

I/O Equivalent Circuit Pin 1 (VCC), Pin 3 (GND) Pin 2 (OUT) Pin 4 (INV) Pin 5 (STBY)
Notes for use 1. Absolute Maximum Ratings Use of the IC in excess of absolute maximum ratings such as the applied voltage or operating temperature range may result in IC deterioration or damage. Assumptions should not be made regarding the state of the IC (short mode or open mode) when such damage is suffered. A physical safety measure such as a fuse should be implemented when use of the IC in a special mode where the absolute maximum ratings may be exceeded is anticipated. 2. GND voltage Ensure a minimum GND pin potential in all operating conditions. In addition, ensure that no pins other than the GND pin carry a voltage lower than or equal to the GND pin, including during actual transient phenomena. 3. Thermal design Use a thermal design that allows for a sufficient margin in light of the power dissipation (Pd) in actual operating conditions. 4. Inter-pin shorts and mounting errors Use caution when orienting and positioning the IC for mounting on printed circuit boards. Improper mounting may result in damage to the IC. Shorts between output pins or between output pins and the power supply and GND pin caused by the presence of a foreign object may result in damage to the IC. 5. Operation in strong electromagnetic field Operation in a strong electromagnetic field may cause malfunction. 6. Thermal shutdown circuit (TSD circuit) This IC incorporates a built-in thermal shutdown circuit (TSD circuit). The TSD circuit is designed only to shut the IC off to prevent runaway thermal operation. Do not continue to use the IC after operating this circuit or use the IC in an environment where the operation of the thermal shutdown circuit is assumed. 7. Testing on application boards When testing the IC on an application board, connecting a capacitor to a pin with low impedance subjects the IC to stress. Always discharge capacitors after each process or step. Ground the IC during assembly steps as an antistatic measure, and use similar caution when transporting or storing the IC. Always turn the IC's power supply off before connecting it to or removing it from a jig or fixture during the inspection process. VCC GND OUT VCC INV VCC 300Ω STB VC 70KΩ 60KΩ 140KΩ Fig.33Input Output Equivalent Circuit

BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5 Technical Note 13/16 www.rohm.com 2009.04- Rev.B © 2009 ROHM Co., Ltd. All rights reserved. Output Pin VCC Back current prevention diode Bypass diode 8. IC pin input This IC is a monolithic IC which (as below) has P+ substrate and betweenthe various pin. A P-N junction is formed from this P layer of each pin. For example the relation between each potential is as follows. (When GND > PinB and GND > PinA, the P-N junction operates as a parasitic diode.) Parasitic diodes can occur inevitably in the structure of the IC. The operation of parasitic diodes can result in mutual interference among circuits as well as operation faults and physical damage. Accordingly, you must not use methods by which parasitic diodes operate, such as applying a voltage that is lower than the GND(P substrate)voltage to an input pin. 9. Common impedance Power supply and ground wiring should reflect consideration of the need to lower common impedance and minimize ripple as much as possible (by making wiring as short and thick as possible or rejecting ripple by incorporating inductance and capacitance). 10. Pin short and mistake fitting Do not short-circuit between OUT pin and VCC pin, OUT pin and GND pin, or VCC pin and GND pin. When soldering the IC on circuit board, please be unusually cautious about theorientation and the position of the IC. Fig.35 P substrate Ｎ Parasitic diode ～～ GND N P N P＋ P＋ Resistance Parasitic diode ～～ＧＮＤ N P N N P＋ P＋ Transistor (NPN) B N E Ｃ GND P substrate ～～ GND B C E Other adjacent components Parasitic diode ～～ GND Parasitic diode (PinB)(PinA) (PinB) (PinA) Fig.34 Simplified structure of a Bipolar IC

BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5 Technical Note 14/16 www.rohm.com 2009.04- Rev.B © 2009 ROHM Co., Ltd. All rights reserved. 11. Application circuit Although we can recommend the application circuits contained herein with a relatively high degree of confidence, we ask that you verify all characteristics and specifications of the circuit as well as performance under actual conditions. Please note that we cannot be held responsible for problems that may arise due to patent infringements or noncompliance with any and all applicable laws and regulations. 12. Operation The IC will turn ON when the voltage at the STBY pin is greater than 2.0V and will switch OFF if under 0.3V. Therefore, do not input voltages between 0.3V and 2.0V. Malfunctions and/or physical damage may occur.

Power Dissipation TO252-S TO220 AMBIENT TEMPERATURE : Ta[°C] 0 25 50 75 100 125 150 (3) 11.0W (2) 6.5W (1) 2.0W POW ER DISSIPATION : Pd [W ] (1) No heat sink (2) 2layer PCB (Copper laminate area 15 mm×15mm) (3) 2layer PCB (Copper laminate area 70 mm×70mm) (4) 4layer PCB (Copper laminate area 70 mm×70mm) (1) No heat sink (2) Aluminum heat sink 50×50×2 (mm 3) (3) Aluminum heat sink 100×100×2 (mm 3) 0 25 50 75 100 125 150 (1) 0.80W (2) 1.85W AMBIENT TEMPERATURE : Ta[°C] (3) 3.50W (4) 4.80W POW ER DISSIPATION : Pd [W ] Fig.36 Fig.37

Ordering part number B D 9 7 0 1 F P - E 2 Part No. Part No. 9701=36V/1.5A 9702=36V/1.5A 9703=36V/3.0A Package FP : TO252-5 CP-V5 : TO220CP-V5 T/T-V5 : TO220FP-5(V5) Packaging and forming specification E2: Embossed tape and reel None:Tray,Tube
Package specifications (Unit : mm) TO252-5 1 2 3 54 0.8 0.5 1.27 1.5 2.5 FIN 6.5±0.2 2.3±0.2 0.5±0.1 1.0±0.2 9.5±0.5 0.5±0.1 5.5±0.2 1.5±0.2 C0.5 5.1+0.2 -0.1 Direction of feed1pin Reel ∗ Order quantity needs to be multiple of the minimum quantity. <Tape and Reel information> Embossed carrier tapeTape Quantity Direction of feed The direction is the 1pin of product is at the lower left when you hold reel on the left hand and you pull out the tape on the right hand 2000pcs ( ) (Unit : mm) TO220FP-5 7.0 10.0 2.8 4.5 1.778 0.5±0.1 1.2 0.8 1.8±0.28.0±0.2 0.7 12.0±0.2 17.013.5Min. φ3.2±0.1 −0.2 +0.4 +0.3 −0.1 −0.1 +0.2+0.3 −0.1 +0.3 −0.1 23451 2.85 ∗ Order quantity needs to be multiple of the minimum quantity. <Tape and Reel information> TubeContainer Quantity Direction of feed 500pcs Direction of products is fixed in a container tube

BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5 Technical Note 16/16 www.rohm.com 2009.04- Rev.B © 2009 ROHM Co., Ltd. All rights reserved. (Unit : mm) TO220FP-5(V5) 0.7 7.0 10.0 1.778 1234 5 1.2 0.8 1.8±0.28.0±0.2 12.0±0.2 17.0 31.5Max. φ3.2±0.1 −0.2+0.4 + 0.3 − 0.1 + 0.3− 0.1 2.8 4.5 0.5±0.1 −0.1+0.2 +0.3−0.1 (2.85) 4.25 (2.0) 23.4 17.5 25.8 8.15 ∗ Order quantity needs to be multiple of the minimum quantity. <Tape and Reel information> TubeContainer Quantity Direction of feed 500pcs Direction of products is fixed in a container tube (Unit : mm) TO220CP-V5 16.92 0.92 φ3.2±0.1 4.5±0.1 0.82±0.1 8.0±0.2 1.58 0.42±0.1 12.0±0.2 1.7781.444 4.92±0.2 13.60 15.2-0.2+0.4 4.12 1.0±0.2 (1.0) (2.85) Direction of feed1pinReel ∗ Order quantity needs to be multiple of the minimum quantity. <Tape and Reel information> Embossed carrier tapeTape Quantity Direction of feed The direction is the 1pin of product is at the lower left when you hold reel on the left hand and you pull out the tape on the right hand 500pcs

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Product Information

BD9701 specifications and overview.

Summary

Simple Step-down Switching Regulators with Built-in Power MOSFET

Description

Simple Step-down Switching Regulators with Built-in Power MOSFET

Source title BD9701 Datasheet(PDF) - Rohm

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