Standard LDO Regulators Standard Fixed Output LDO Regulators BA□□DD0 Series, BA□□CC0 Series Standard Fixed Output LDO Regulators with Shutdown Switch BA□□DD0W and,BA□□CC0W Series No.11021ECT01 ●Description Standard Fixed Output LDO Regulators are low-saturation regulators, available for output s up to 2A / 1A. ROHM has a wide output voltage range and package lineup with and without shutdown switches. This IC has a built-in over-current protection circuit that prevents the destruction of the IC due to output short circuits, a thermal shut-down circuit that protects the IC from damage due to overloading and an over-voltage protection circuit that protects the IC from surges generated in the power supply line of the IC. ●Features 1) Maximum output current : 2A (BA□□DD0),1A(BA□□CC0) 2) ±1% highly accurate output voltage (BA□□DD0) 3) Low saturation with PNP output 4) Built-in over-current protection circuit that prevents the destruction of the IC due to output short circuits 5) Built-in thermal shutdown circuit for protecting the IC from damage due to overloading 6) Built-in over- voltage protection circuit that prevents the destruction of the IC due to power supply surges 7) TO220FP and HRP5 packaging (BA□□DD0) ,TO220FP and TO252 packaging(BA□□CC0) ●Applications Used in DSP power supplies for DVD and CD players, FPDs, televisions, personal computers or any other consumer device www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 1/11 2011.03 - Rev.C BA□□DD0T Series,BA□□CC0T Series,BA□□CC0FP Series BA□□DD0WT Series,BA□□DD0HFP Series,BA□□CC0WT Series,BA□□CC0WFP Series ●Line up matrix ■1A BA□□CC0 Series Part Number Technical Note 3.0 3.3 5.0 6.0 7.0 8.0 9.0 10 12 15 BA□□CC0WT ○ ○ ○ － ○ ○ ○ ○ ○ － TO220FP-5 BA□□CC0WFP － ○ ○ ○ ○ ○ ○ － ○ － TO252-5 BA□□CC0T ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ TO220FP-3 ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ TO252-3 1.5 1.8 2.5 3.0 3.3 5.0 9.0 12 16 BA□□DD0WT ○ ○ ○ ○ ○ ○ ○ ○ ○ TO220FP-5 BA□□DD0WHFP ○ ○ ○ ○ ○ ○ ○ ○ ○ HRP5 BA□□DD0T ○ ○ ○ ○ ○ ○ ○ ○ ○ TO220FP-3 BA□□CC0FP ■2A BA□□DD0 Series 品 名 Part Number: BA□□CC0□□ a a Details □□ 03 a c bc Symbol Details Output Voltage Designation Output Voltage Output Voltage □□ (V) (V) 3.0V(Typ.) 8.0V(Typ.) 08 □□ 15 a Output Voltage Designation Output Voltage Output Voltage □□ (V) (V) 1.5V(Typ.) 50 5.0V(Typ.) 033 3.3V(Typ.) 09 9.0V(Typ.) 18 1.8V(Typ.) 90 9.0V(Typ.) 05 5.0V(Typ.) J0 10.0V(Typ.) 25 2.5V(Typ.) J2 12.0V(Typ.) 06 6.0V(Typ.) J2 12.0V(Typ.) 30 3.0V(Typ.) J6 16.0V(Typ.) 07 7.0V(Typ.) J5 15.0V(Typ.) 33 3.3V(Typ.) Switch:”With W”:Shutdown switch included ”Without W” :Shutdown switch not included Package T : TO220FP-5,TO220FP-3 FP : TO252-5,TO252-3 b パッケージ Part Number: BA□□DD0□□ bc Symbol Package b c Switch:”With W” :Shutdown switch included ”Without W”:Shutdown switch not included Package T : TO220FP-5,TO220FP-3 HFP: HRP5 ●Absolute Maximum Ratings(Ta=25℃) Parameter *1 Input Power Supply Voltage Symbol Ratings Unit VCC -0.3～+35 V 2300(HRP5) Power Dissipation*2 Pd 1300(TO252-5) 1200(TO252-3) mW 2000(TO220FP-3,5) Operating Temperature Range Ambient Storage Temperature Junction Temperature *3 Output Control Terminal Voltage Voltage Applied to the Tip *4 Topr -40～+125 ℃ Tstg -55～+150 ℃ TjMAX. +150 ℃ Vctl -0.3～+Vcc V VCC peak +50 V *1 Must not exceed Pd *2 HRP5 : In cases in which Ta≧25℃ when a 70mm×70mm×1.6mm glass epoxy board is used, the power is reduced by 18.4 mW/℃. TO252FP-3 : In cases in which Ta≧25℃ when a 70mm×70mm×1.6mm glass epoxy board is used, the power is reduced by 9.6 mW/℃. TO252FP-5 : In cases in which Ta≧25℃ when a 70mm×70mm×1.6mm glass epoxy board is used, the power is reduced by 10.4 mW/℃. TO220FP-5 : No heat sink. When Ta≧25℃, the power is reduced by 16 mW/℃. *3 Only for models with shutdown switches. *4 Applied voltage : 200msec or less (tr≥1msec) tr≧1msec 50V 35V 0V MAX200msec (Voltage Supply more than 35V) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 2/11 2011.03 - Rev.C BA□□DD0T Series,BA□□CC0T Series,BA□□CC0FP Series BA□□DD0WT Series,BA□□DD0HFP Series,BA□□CC0WT Series,BA□□CC0WFP Series Technical Note ●Recommended Operating Range (Ta=25℃) Parameter Input PowerSupply Voltage Output Current BA□□CC0 BA□□DD0 BA□□CC0 BA□□DD0 Output Control Terminal Voltage Symbol VCC Io Vctl Ratings Unit Min. Typ. Max. 4.0 ― 25.0 V 3.0 ― 25.0 V ― ― 1 A ― ― 2 A 0 ― VCC V ●Electrical Characteristics(ABRIDGED) *5 BA□□CC0 Series (unless specified otherwise, Ta=25℃, VCTL=5.0V(only with switch), Io=500mA,and Vcc= VccD ) Limits Parameter Symbol Unit Conditions Min. Typ. Max. Output Voltage Vo Vo×0.98 Vo Vo×1.02 V Refer to the lineup for Vo Circuit Current at Shutdown Isd － 0 10 µA VCTL=0V Minimum I/O Difference ΔVd － 0.3 0.5 V Vcc= 0.95×Vo Output Current Capacity Io 1.0 － － A Input Stability Reg.I － 20 100 mV Vcc= (Vo+1)V → 25V Load Stability Reg.L － 50 100 mV Io=5mA→1A Tcvo － ±0.02 － %/℃ Output Voltage *6 Temperature Coefficient Io=5mA ,Tj=0~125℃ *7 BA00DD0□□ series (unless specified otherwise, Ta=25℃, VCTL=3V(only with switch), Io=500mA,and Vcc=VccD ) Limits Parameter Symbol Unit Conditions Min. Typ. Max. Output Voltage Vo Vo×0.99 Vo Vo×1.01 V Io=200mA Circuit Current at Shutdown Isd － 0 10 µA VCTL=0V Minimum I/O Difference ΔVd － 0.45 0.7 V Vcc= 0.95×Vo, Io=2A Output Current Capacity Io 2.0 － － A Input Stability Reg.I － 15 50 mV *7 Vcc= VccD →25V, Io=200mA Load Stability Reg.L － 50 200 mV Io=5mA→2A Tcvo － ±0.02 － %/℃ Output Voltage *6 Temperature Coefficient Io=5mA ,Tj=0~125℃ *5 Vo=3.0V : Vcc= 8.0V , Vo=3.3V : Vcc=8.3V , Vo=5.0V : Vcc=10.0V , Vo=6.0V : Vcc=11.0V , Vo=7.0V : Vcc=12.0V, Vo=8.0V : Vcc= 13.0V , Vo=9.0V : Vcc=14.0V , Vo=10.0V : Vcc=15.0V , Vo=12.0V : Vcc=17.0V , Vo=15.0V : Vcc=20.0V *6 Design guarantee (100% shipping inspection not performed) *7 Vo=1.5V , 1.8V , 2.5V , 3.0V : Vcc=4.0V , Vo=3.3V , 5.0V : Vcc=7.0V , Vo=9.0V : Vcc=12.0V ,Vo=12V : Vcc=14V , Vo=16V : Vcc=18V www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 3/11 2011.03 - Rev.C BA□□DD0T Series,BA□□CC0T Series,BA□□CC0FP Series BA□□DD0WT Series,BA□□DD0HFP Series,BA□□CC0WT Series,BA□□CC0WFP Series Technical Note ●Reference Data (Unless specified otherwise, Vcc=8.3V, Vo=3.3V, VCTL=5.0V, and Io=0mA) BA□□CC0□□(BA33CC0WT) [BA033CC0WT] 2.0 1.5 1.0 0.5 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0.0 0 2 0 4 6 8 10 12 14 16 18 20 SUPPLY VOLTAGE ： Vcc [V] Fig.1 Circuit current 2.5 2 1.5 1 0.5 1.5 1.0 0.5 0 [BA033CC0WT] 2 400 300 200 100 200 400 600 800 OUTPUT CURRENT ： IO [mA] [BA033CC0WT] 60 50 40 30 20 10 1000 Fig.5 Input/Output Voltage Difference IOUT(0V=1A) Fig.4 Load Stability 70 0 0 2000 4 6 8 10 12 14 16 18 20 SUPPLY VOLTAGE ： Vcc [V] [BA033CC0WT] 80 0 4.5 2.0 Fig.3 Input Stability (Io=500mA) 500 0 400 800 1200 1600 OUTPUT CURRENT ： IO[mA] 2.5 RIPPLE REJECTION ： R.R. [dB] 3 0 3.0 0.0 4 6 8 10 12 14 16 18 20 SUPPLY VOLTAGE ： Vcc [V] 600 DROPOUT VOLTAGE ： ΔVd [mV] OUTPUT VOLTAGE ： V OUT [V] 2 3.5 Fig.2 Input Stability [BA033CC0WT] 3.5 [BA033CC0WFP] 4.0 OUTPUT VOLTAGE ： VOUT [V] 2.5 [BA033CC0WFP] 4.0 OUTPUT VOLTAGE ： VOUT [V] CIRCUIT ＣURRENT ： Icc [mA] 3.0 [BA033CC0WT] 200 10 100 1000 10000 100000 1000000 FREQUENCY ： f [Hz] Fig.6 Ripple Rejection Characteristics (Io=100mA) [BA033CC0WT] 1000 3.5 3 2.5 CIRCUIT CURRENT ： Ictl [µA] CIRCUIT ＣURRENT ： Icc [mA] OUTPUT VOLTAGE ： VOUT [V] 900 4 150 100 50 800 700 600 500 400 300 200 100 0 0 -20 0 20 40 60 80 100 AMBIENT TEMPERATURE ： Ta [℃] Fig.7 Output Voltage Temperature Characteristics 6 5 4 3 2 1 0 0 2 4 6 8 10 12 14 16 18 20 22 24 CONTROL VOLTAGE ： Vctl [V] Fig.10 CTL Voltage vs. Output Voltage www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 0 2 4 6 8 10 12 14 16 18 20 CONTROL VOLTAGE:Vctl（V) Fig.9 CTL Voltage vs. CTL Current [BA033CC0WFP] 4.0 OUTPUT VOLTAGE ： VOUT [V] OUTPUT VOLTAGE ： VOUT [V] 7 0 1000 Fig.8 Circuit Current by load Level (IOUT=0mA→1A) [BA033CC0WFP] 8 200 400 600 800 OU TPUT CURRENT:Io(mA) [BA033CC0WFP] 4.0 3.5 3.5 OUTPUT VOLTAGE ： VOUT [V] 2 -40 3.0 2.5 2.0 1.5 1.0 0.5 0.0 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 5 10 15 20 25 30 35 SUPPLY VOLTAGE ： Vcc [V] 40 Fig.11 Overvoltage Operating Characteristics (Io=200mA) 4/11 130 140 150 160 170 180 190 AMBIENT TEMPERATURE ： Ta [℃] Fig.12 Thermal Shutdown Circuit Characteristics 2011.03 - Rev.C BA□□DD0T Series,BA□□CC0T Series,BA□□CC0FP Series BA□□DD0WT Series,BA□□DD0HFP Series,BA□□CC0WT Series,BA□□CC0WFP Series Technical Note ●Reference Data (Unless specified otherwise, Vcc=7.0V, Vo=5.0V, VCTL=3.0V, and Io=0mA) BA□□DD0□□(BA50DD0WT) [BA50DD0WT] 4 3 2 1 0 OUTPUT VOLTAGE ： VOUT [V] 5 [BA50DD0WT] 8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 OUTPUT VOLTAGE ： VOUT [V] CIRCUIT ＣURRENT ： Icc [mA] 6 0 2 4 6 8 10 12 14 16 18 20 22 24 SUPPLY VOLTAGE ： Vcc [V] 0 2 4 6 8 10 12 14 16 18 20 22 24 SUPPLY VOLTAGE ： Vcc [V] 0 2 4 6 8 10 12 14 16 18 20 22 24 SUPPLY VOLTAGE ： Vcc [V] Fig.14 Input Stability Fig.15 Input Stability (Io=2A) [BA50DD0WT] RIPPLE REJECTION ： R.R. [dB] 600 500 400 300 200 100 40 30 20 10 0 Fig.17 Input/Output Voltage Difference 4.9 140 120 100 80 60 40 20 4.8 Fig.19 Temperature Characteristics 6 5 4 3 2 1 0 2 4 6 8 10 12 14 16 18 20 22 24 CONTROL VOLTAGE ： VCTL [V] Fig.22 CTL Voltage vs. Output Voltage www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 400 300 200 100 0 2 4 6 2.0 Fig.21 CTL Voltage vs. CTL Current 8 7 6 5 4 3 2 1 0 5 10 15 20 25 30 35 SUPPLY VOLTAGE ： Vcc [V] 40 Fig.23 Overvoltage Operating 5/11 8 10 12 14 16 18 20 22 24 CONTROL VOLYAGE:Vctl（V) 0 0 500 [BA50DD0WT] 8 OUTPUT VOLTAGE ： VOUT[V] 7 0.5 1.0 1.5 OUTPUT CURRENT ： IOUT [A] Fig.20 Circuit Current by Load Level [BA50DD0WT] 8 600 0 0 0.0 -20 0 20 40 60 80 100 AMBIENTTEMPERATURE [℃] 700 OUTPUT VOLTAGE ： VOUT [V] -40 1000 10000 100000 1000000 FREQUENCY ： f [Hz] [BA50DD0WT] 800 CONTROL CURRENT:ICTL(µA) CIRCUIT CURRENT (mA) 5.0 160 100 Fig.18 Ripple Rejection Characteristics [BA50DD0WT] 200 180 5.1 10 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 OUTPUT CURRENT ： IOUT [A] [BA50DD0WT] 5.2 OUTPUT VOLTAGE ： VOUT [V] 50 0 Fig.16 Load Stability [BA50DD0WT] 60 700 0 0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 3.6 4 4.4 4.8 OUTPUT CURRENT ： IOUT [A] OUTPUT VOLTAGE ： VOUT [V] [BA50DD0WT] 800 DROPOUT VOLTAGE ： VDRP[mV] OUTPUT VOLTAGE ： V OUT [V] Fig.13 Circuit Current 8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 [BA50DD0WT] 8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 [BA50DD0WT] 6 4 2 0 130 140 150 160 170 180 190 AMBIENT TEMPERATURE ： Ta [℃] Fig.24 Thermal Shutdown Circuit Characteristics 2011.03 - Rev.C BA□□DD0T Series,BA□□CC0T Series,BA□□CC0FP Series BA□□DD0WT Series,BA□□DD0HFP Series,BA□□CC0WT Series,BA□□CC0WFP Series Technical Note ●Block Diagrams BA□□CC0WFP/ BA□□DD0WHFP/ BA□□CC0WT/ BA□□DD0WT GND(TO252-5･HRP5) Fin TOP VIEW Vcc PIN No. Pin Name FIN 1 Driver Vref 2 R2 OVP TSD R1 OCP 1 2 3 4 5 CTL Vcc N.C. OUT N.C. 1 2 3 45 HRP5 1 2 3 45 TO252-5 3 TOP VIEW Function CTL Output voltage ON/OFF control Vcc Power supply voltage input N.C/GND Unconnected terminal/GND*1 4 OUT Voltage output 5 N.C Unconnected terminal Fin GND GND *2 *1 TO252-5=N.C.,TO220FP-5,HRP5=GND *2 TO252-5,HRP5 only (TO252-5) GND (TO220FP-5,HRP5) 1 2 3 45 TO220FP-5 Fig.25 BA□□CC0T/ BA□□CC0FP/ BA□□DD0T GND(TO252-3) Fin Vcc TOP VIEW FIN Driver Vref TOP VIEW PIN No. Pin Name 1 2 R2 OVP TSD R1 OCP 1 2 3 TO252-3 1 2 3 Vcc N.C. OUT 1 2 3 TO220FP-3 Vcc Function Power supply voltage input N.C/GND Unconnected terminal/GND*1 3 OUT Voltage output Fin GND GND *2 *1 TO252-3=N.C.,TO-220FP3=GND *2 TO252-3 only (TO252-3) GND (TO220FP-3) Fig.26 ●Input / Output Equivalent Circuit Diagrams < BA□□DD0 Series > < BA□□CC0 Series > Vcc Vcc 10kΩ Vcc 25kΩ OUT 39kΩ R2 2kΩ CTL CTL OUT 25kΩ 10kΩ R2 31kΩ R1 R1 Fig.28 Fig.27 www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 6/11 2011.03 - Rev.C BA□□DD0T Series,BA□□CC0T Series,BA□□CC0FP Series BA□□DD0WT Series,BA□□DD0HFP Series,BA□□CC0WT Series,BA□□CC0WFP Series ●Thermal Design HRP-5 10 9 8 5 ②5.5W 4 3 2 Power Dissipation:Pd(W) ③7.3W 6 15 10 0 0.0 0 25 0.8 (2)2.0 1 0 1.30 1.2 0.4 5 ①2.3W Mounted on a Rohm standard board Board size : 70×70×1.6 ㎜ Copper foil area :7×7 ㎜ TO252-5θja=96.2(℃/W) 1.6 20 (1)20.0 7 TO252-5 2.0 When using a maximum heat sick : θj-c=6.25(℃/W) When using an IC alone : θj-6=62.5(℃/W) Power Dissipation:Pd(W) Power Dissipation:Pd(W) TO220FP-5 25 3 Board size : 70×70×1.6 ㎜ (board contains a thermal via) 2 Board front copper foil area : 10.5×10.5 ㎜ 2 ①2-layer board (back surface copper foil area :15×15 ㎜ ) 2 ②2-layer board (back surface copper foil area :70×70 ㎜ ) 2 ③4-layer board (back surface copper foil area :70×70 ㎜ ) Technical Note 50 75 100 Ambient temperature:Ta(℃） 125 150 0 25 50 75 100 Ambient temperature:Ta(℃） Fig.29 125 150 0 25 Fig.30 50 75 100 125 Ambient temperature:Ta(℃） 150 Fig.31 When using at temperatures over Ta=25℃, please refer to the heat reducing characteristics shown in Fig.29 through 31. The IC characteristics are closely related to the temperature at which the IC is used and if the temperature exceeds the maximum junction temperature TjMAX., the elements may be damaged or destroyed. From the standpoints of instantaneous destruction and long-term operating reliability, it is necessary give sufficient consideration to IC heat. In order to protect the IC from thermal damage, it is necessary to operate it at temperatures lower than the maximum junction temperature TjMAX of the IC. Fig.30 shows the acceptable loss and heat reducing characteristics of the TO220FP package The portion shown by the diagonal line is the acceptable loss range that can be used with the IC alone. Even when the ambient temperature Ta is a normal temperature (25℃), the chip (junction) temperature Tj may be quite high so please operate the IC at temperatures less than the acceptable loss Pd. The method of calculating the power consumption Pc(W) is as follows. Pc = (Vcc-Vo) × Io ＋ Vcc × Icca Acceptable loss Pd≦Pc Vcc：Input voltage Vo：Output voltage Io：Load current Vcca：Circuit current Solving this for load current IO in order to operate within the acceptable loss: Io≦ Pd – Vcc×Icca Vcc－Vo (Please refer to Figs.8 and 20 for Icca.) It is then possible to find the maximum load current IoMAX with respect to the applied voltage Vcc at the time of thermal design. ・Calculation Example Example 1) When Ta=85℃, Vcc=8.3V, Vo=3.3V, BA33DD0WT 1.04－8.3×Icca Io≦ 5 Io≦200mA (Icca : 2mA) With the IC alone : θja=62.5℃/W → -16mW/℃ 25℃=2000mW → 85℃=1040mW Please refer to the above information and keep thermal designs within the scope of acceptable loss for all operating temperature ranges. The power consumption Pc of the IC when there is a short circuit (short between Vo and GND) is : Pc=Vcc×(Icca＋Ishort) *Ishort : Short circuit current www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 7/11 2011.03 - Rev.C BA□□DD0T Series,BA□□CC0T Series,BA□□CC0FP Series BA□□DD0WT Series,BA□□DD0HFP Series,BA□□CC0WT Series,BA□□CC0WFP Series Technical Note ●Peripheral Circuit Considerations ・Vcc Terminal Please attach a capacitor (greater than 0.33µF) between the Vcc and GND. The capacitance values will differ depending on the application, so please take this into account when configuring the terminal. ・GND Terminal Please be sure to keep the set ground and IC ground at the same potential level so that a potential difference does not arise between them. If a potential difference arises between the set ground and the IC ground, the preset voltage will not be outputted, causing the system to become unstable. Therefore, please reduce the impedance by making the ground patterns as wide as possible and by reducing the distance between the set ground and the IC ground as much as possible. ・CTL Terminal The CTL terminal is turned ON at 2.0V and higher and OFF at 0.8V and lower within the operating power supply voltage range. The power supply and the CTL terminal may be started up and shut down in any order without problems. ●Vo Terminal 100 IC 22μF Unstable operating region 10 Stable operating region 1 Unstable operating region 0.1 0 Fig.32 Output Equivalent Circuit EFFECTIVE SERIES RESISTANCE:ESR [Ω] OUT EFFECTIVE SERIES RESISTANCE:ESR [Ω] 100 200 800 600 400 OUTPUT CURRENT：lo(mA) 1000 Fig.33 ESR-Io Characteristics (BA□□CC0) Unstable operating region 10 Stable operating region 1 0.1 Unstable operating region 1 1 100 10 OUTPUT 1000 10000 CURRENT：lo(mA) Fig.34 ESR vs Io Characteristics (B A□□DD0) Please attach an anti-oscillation capacitor between Vcc and GND. The capacitance of the capacitor may significantly change due to factors such as temperature changes, making it impossible to completely stop oscillations. Please use a tantalum capacitor or aluminum electrolysis capacitor with favorable characteristics and small internal series resistance (ESR) even at low temperatures. The output fluctuates regardless of whether the ESR is large or small. Please use the IC within the stable operating region while referring to the ESR characteristics reference data shown in Figs.32 through 34. In applications where there are sudden load fluctuations, the use of a capacitor with large capacitance is recommended. www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 8/11 2011.03 - Rev.C BA□□DD0T Series,BA□□CC0T Series,BA□□CC0FP Series BA□□DD0WT Series,BA□□DD0HFP Series,BA□□CC0WT Series,BA□□CC0WFP Series Technical Note ●Other Points of Caution 1) Protection Circuits Over-current Protection Circuit A built-in over-current protection circuit corresponding to the current capacity prevents the destruction of the IC when there are load shorts. This protection circuit is a “7”-shaped current control circuit that is designed such that the current is restricted and does not latch even when a large current momentarily flows through the system with a high-capacitance capacitor. However, while this protection circuit is effective for the prevention of destruction due to unexpected accidents, it is not suitable for continuous operation or transient use. Please be aware when creating thermal designs that the overcurrent protection circuit has negative current capacity characteristics with regard to temperature (Refer to Figs.4 and 16). Thermal Shutdown Circuit (Thermal Protection) This system has a built-in temperature protection circuit for the purpose of protecting the IC from thermal damage. As shown above, this must be used within the range of acceptable loss, but if the acceptable loss happens to be continuously exceeded, the chip temperature Tj increases, causing the temperature protection circuit to operate. When the thermal shutdown circuit operates, the operation of the circuit is suspended. The circuit resumes operation immediately after the chip temperature Tj decreases, so the output repeats the ON and OFF states (Please refer to Figs.12 and 24 for the temperatures at which the temperature protection circuit operates). There are cases in which the IC is destroyed due to thermal runaway when it is left in the overloaded state. Be sure to avoid leaving the IC in the overloaded state. Reverse Current In order to prevent the destruction of the IC when a reverse current flows through the IC, it is recommended that a diode be placed between the Vcc and Vo and a pathway be created so that the current can escape (Refer to Fig.35). Reverse current Vcc OUT CTL GND Fig. 36:Bypass diode 2) This IC is bipolar IC that has a P-board (substrate) and P+ isolation layer between each devise, as shown in Fig.36. A P-N junction is formed between this P-layer and the N-layer of each device, and the P-N junction operates as a parasitic diode when the electric potential relationship is GND> Terminal A, GND> Terminal B, while it operates as a parasitic transistor when the electric potential relationship is Terminal B GND> Terminal A. Parasitic devices are structurally inevitable in the IC. The operation of parasitic devices induces mutual interference between circuits, causing malfunctions and eventually the destruction of the IC. It is necessary to be careful not to use the IC in ways that would cause parasitic elements to operate. For example, applying a voltage that is lower than the GND (P-board) to the input terminal. Transistor (NPN) (Pin B) C B Resistor (Pin B) (Pin A) E B GND P+ N N N P+ P+ P N GND N Parasitic element or transistor N N P P Parasitic element or transistor E P+ P C Parasitic element (Pin A) GND GND Parasitic element GND Fig. 37: Example of the basic structure of a bipolar IC www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 9/11 2011.03 - Rev.C BA□□DD0T Series,BA□□CC0T Series,BA□□CC0FP Series BA□□DD0WT Series,BA□□DD0HFP Series,BA□□CC0WT Series,BA□□CC0WFP Series Technical Note ●Ordering part number B A 3 Part No. 3 C Output voltage C Series CC0 : 1A DD0 : 2A 0 W H Shutdown switch W : Includes switch F P Package HFP ：HRP5 FP ：TO252-3 TO252-5 T ：TO220FP-3 TO220FP-5 - T R Packaging and forming specification TR: Embossed tape and reel (HRP5) E2: Embossed tape and reel (TO252-3, TO252-5) None : Container Tube V5 :Foaming(V5 only) HRP5 <Tape and Reel information> 8.82 ± 0.1 (6.5) 0.08±0.05 1.2575 1 2 3 4 0.835±0.2 1.523±0.15 8.0±0.13 (7.49) 1.905±0.1 10.54±0.13 1.017±0.2 9.395±0.125 (MAX 9.745 include BURR) Tape Embossed carrier tape Quantity 2000pcs Direction of feed TR direction is the 1pin of product is at the upper right when you hold ( The ) reel on the left hand and you pull out the tape on the right hand 1pin 5 +5.5° 4.5°−4.5° +0.1 0.27 −0.05 S 0.73±0.1 0.08 S 1.72 Direction of feed Reel (Unit : mm) ∗ Order quantity needs to be multiple of the minimum quantity. TO252-3 <Tape and Reel information> 6.5±0.2 C0.5 1.5±0.2 +0.2 5.1 -0.1 Tape Embossed carrier tape Quantity 2000pcs 2.3±0.2 0.5±0.1 Direction of feed 1.5 2 3 0.8 1 0.65 E2 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 ) 2.5 9.5±0.5 5.5±0.2 FIN 0.65 0.5±0.1 0.75 2.3±0.2 1.0±0.2 2.3±0.2 1pin Reel (Unit : mm) Direction of feed ∗ Order quantity needs to be multiple of the minimum quantity. TO252-5 <Tape and Reel information> 2.3±0.2 6.5±0.2 C0.5 1.5±0.2 +0.2 5.1 -0.1 0.5±0.1 Tape Embossed carrier tape Quantity 2000pcs 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 ) 1.5 4 5 0.8 1 2 3 2.5 9.5±0.5 5.5±0.2 FIN E2 0.5±0.1 0.5 1.27 1.0±0.2 1pin Reel (Unit : mm) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 10/11 Direction of feed ∗ Order quantity needs to be multiple of the minimum quantity. 2011.03 - Rev.C BA□□DD0T Series,BA□□CC0T Series,BA□□CC0FP Series BA□□DD0WT Series,BA□□DD0HFP Series,BA□□CC0WT Series,BA□□CC0WFP Series Technical Note TO220FP-3 +0.2 2.8 −0.1 φ3.2±0.1 Container Tube Quantity 500pcs Direction of feed Direction of products is fixed in a container tube 8.0±0.2 12.0±0.2 <Tape and Reel information> +0.3 4.5 −0.1 7.0 +0.3 −0.1 5.0±0.2 13.5Min. +0.4 17.0 −0.2 1.8±0.2 +0.3 10.0 −0.1 1.3 0.8 2.54±0.5 2.54±0.5 1 2 0.55 +0.1 −0.05 2.6±0.5 3 ∗ Order quantity needs to be multiple of the minimum quantity. (Unit : mm) <Tape and Reel information> +0.3 4.5 −0.1 +0.2 2.8 −0.1 φ3.2±0.1 Container Tube Quantity 500pcs Direction of feed Direction of products is fixed in a container tube 8.0±0.2 0.7 +0.4 17.0 −0.2 +0.3 10.0−0.1 +0.3 7.0 −0.1 13.5Min. 12.0±0.2 1.8±0.2 TO220FP-5 1.2 0.8 1.778 0.5±0.1 2.85 1 2 3 4 5 ∗ Order quantity needs to be multiple of the minimum quantity. (Unit : mm) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 11/11 2011.03 - Rev.C Notice Notes No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. Great care was taken in ensuring the accuracy of the information specified in this document. However, should you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no responsibility for such damage. The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM and other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. The Products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices). The Products specified in this document are not designed to be radiation tolerant. While ROHM always makes efforts to enhance the quality and reliability of its Products, a Product may fail or malfunction for a variety of reasons. Please be sure to implement in your equipment using the Products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM shall bear no responsibility whatsoever for your use of any Product outside of the prescribed scope or not in accordance with the instruction manual. The Products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuelcontroller or other safety device). ROHM shall bear no responsibility in any way for use of any of the Products for the above special purposes. If a Product is intended to be used for any such special purpose, please contact a ROHM sales representative before purchasing. If you intend to export or ship overseas any Product or technology specified herein that may be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to obtain a license or permit under the Law. Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact us. ROHM Customer Support System http://www.rohm.com/contact/ www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. R1120A