BAJ2DD0WT

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 BA□□CC0WT BA□□CC0WFP BA□□CC0T BA□□CC0FP ■2A BA□□DD0 Series 品名 BA□□DD0WT BA□□DD0WHFP BA□□DD0T Technical Note 3.0 ○ － ○ ○ 1.5 ○ ○ ○ 3.3 ○ ○ ○ ○ 1.8 ○ ○ ○ 5.0 ○ ○ ○ ○ 2.5 ○ ○ ○ 6.0 － ○ ○ ○ 3.0 ○ ○ ○ 7.0 ○ ○ ○ ○ 3.3 ○ ○ ○ 8.0 ○ ○ ○ ○ 5.0 ○ ○ ○ 9.0 ○ ○ ○ ○ 9.0 ○ ○ ○ 10 ○ － ○ ○ 12 ○ ○ ○ 12 ○ ○ ○ ○ 16 ○ ○ ○ 15 － － ○ ○ Package TO220FP-5 TO252-5 TO220FP-3 TO252-3 パッケージ TO220FP-5 HRP5 TO220FP-3 Part Number: BA□□CC0□□ Part Number: BA□□DD0□□ a Symbol bc Details Symbol a bc Details □□ 03 a 033 05 06 07 b c Output Voltage Designation Output Voltage Output Voltage □□ (V) (V) 3.0V(Typ.) 8.0V(Typ.) 08 3.3V(Typ.) 5.0V(Typ.) 6.0V(Typ.) 7.0V(Typ.) 09 J0 J2 J5 9.0V(Typ.) 10.0V(Typ.) 12.0V(Typ.) 15.0V(Typ.) b c a □□ 15 18 25 30 33 Output Voltage Designation Output Voltage Output Voltage □□ (V) (V) 1.5V(Typ.) 50 5.0V(Typ.) 1.8V(Typ.) 2.5V(Typ.) 3.0V(Typ.) 3.3V(Typ.) 90 J2 J6 9.0V(Typ.) 12.0V(Typ.) 16.0V(Typ.) Switch:”With W”:Shutdown switch included ”Without W” :Shutdown switch not included Package T : TO220FP-5,TO220FP-3 FP : TO252-5,TO252-3 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 Input Power Supply Voltage *1 Symbol VCC Ratings -0.3～+35 2300(HRP5) 1300(TO252-5) 1200(TO252-3) 2000(TO220FP-3,5) -40～+125 -55～+150 +150 -0.3～+Vcc +50 Unit V Power Dissipation*2 Pd mW Operating Temperature Range Ambient Storage Temperature Junction Temperature Output Control Terminal Voltage Voltage Applied to the Tip *4 *3 Topr Tstg TjMAX. Vctl VCC peak ℃ ℃ ℃ V 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 ●Recommended Operating Range (Ta=25℃) Parameter Input PowerSupply Voltage Output Current BA□□CC0 BA□□DD0 BA□□CC0 BA□□DD0 Symbol VCC Io Vctl Ratings Min. 4.0 3.0 ― ― 0 Typ. ― ― ― ― ― Max. 25.0 25.0 1 2 VCC Unit V V A A V Technical Note Output Control Terminal Voltage ●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 Circuit Current at Shutdown Minimum I/O Difference Output Current Capacity Input Stability Load Stability Output Voltage *6 Temperature Coefficient Vo Isd ΔVd Io Reg.I Reg.L Tcvo Vo×0.98 － － 1.0 － － － Vo 0 0.3 － 20 50 ±0.02 Vo×1.02 10 0.5 － 100 100 － V µA V A mV mV %/℃ Vcc= (Vo+1)V → 25V Io=5mA→1A Io=5mA ,Tj=0~125℃ Refer to the lineup for Vo VCTL=0V Vcc= 0.95×Vo *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 Circuit Current at Shutdown Minimum I/O Difference Output Current Capacity Input Stability Load Stability Output Voltage *6 Temperature Coefficient Vo Isd ΔVd Io Reg.I Reg.L Tcvo Vo×0.99 － － 2.0 － － － Vo 0 0.45 － 15 50 ±0.02 Vo×1.01 10 0.7 － 50 200 － V µA V A mV mV %/℃ Io=200mA VCTL=0V Vcc= 0.95×Vo, Io=2A *7 Vcc= VccD →25V, Io=200mA Io=5mA→2A 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 ●Reference Data (Unless specified otherwise, Vcc=8.3V, Vo=3.3V, VCTL=5.0V, and Io=0mA) BA□□CC0□□(BA33CC0WT) 3.0 CIRCUIT ＣURRENT ： Icc [mA] 2.5 2.0 1.5 1.0 0.5 0.0 0 2 4 6 8 10 12 14 16 18 20 SUPPLY VOLTAGE ： Vcc [V] Technical Note [BA033CC0WT] 4.0 OUTPUT VOLTAGE ： VOUT [V] 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 2 [BA033CC0WFP] 4.0 OUTPUT VOLTAGE ： VOUT [V] 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 2 [BA033CC0WFP] 4 6 8 10 12 14 16 18 20 SUPPLY VOLTAGE ： Vcc [V] 4 6 8 10 12 14 16 18 20 SUPPLY VOLTAGE ： Vcc [V] Fig.1 Circuit current Fig.2 Input Stability [BA033CC0WT] Fig.3 Input Stability (Io=500mA) 80 RIPPLE REJECTION ： R.R. [dB] 70 60 50 40 30 20 10 0 3.5 OUTPUT VOLTAGE ： V OUT [V] 3 [BA033CC0WT] DROPOUT VOLTAGE ： ΔVd [mV] 600 500 400 300 200 100 0 [BA033CC0WT] 2.5 2 1.5 1 0.5 0 0 400 800 1200 1600 OUTPUT CURRENT ： IO[mA] 2000 0 200 400 600 800 OUTPUT CURRENT ： IO [mA] 1000 10 100 1000 10000 100000 1000000 FREQUENCY ： f [Hz] Fig.4 Load Stability [BA033CC0WT] Fig.5 Input/Output Voltage Difference IOUT(0V=1A) 200 Fig.6 Ripple Rejection Characteristics (Io=100mA) 1000 900 CIRCUIT CURRENT ： Ictl [µA] 4.5 OUTPUT VOLTAGE ： VOUT [V] [BA033CC0WT] [BA033CC0WT] 4 CIRCUIT ＣURRENT ： Icc [mA] 150 800 700 600 500 400 300 200 100 3.5 100 3 50 2.5 2 -40 0 -20 0 20 40 60 80 100 AMBIENT TEMPERATURE ： Ta [℃] 0 200 400 600 800 OU TPUT CURRENT:Io(mA) 1000 0 0 2 4 6 8 10 12 14 16 18 20 CONTROL VOLTAGE:Vctl（V) Fig.7 Output Voltage Temperature Characteristics 8 OUTPUT VOLTAGE ： VOUT [V] 7 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.8 Circuit Current by load Level (IOUT=0mA→1A) 4.0 Fig.9 CTL Voltage vs. CTL Current [BA033CC0WFP] [BA033CC0WFP] [BA033CC0WFP] 4.0 3.5 OUTPUT VOLTAGE ： VOUT [V] 3.5 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 OUTPUT VOLTAGE ： VOUT [V] 3.0 2.5 2.0 1.5 1.0 0.5 0.0 130 140 150 160 170 180 190 AMBIENT TEMPERATURE ： Ta [℃] Fig.10 CTL Voltage vs. Output Voltage Fig.11 Overvoltage Operating Characteristics (Io=200mA) Fig.12 Thermal Shutdown Circuit Characteristics www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 4/11 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 ●Reference Data (Unless specified otherwise, Vcc=7.0V, Vo=5.0V, VCTL=3.0V, and Io=0mA) BA□□DD0□□(BA50DD0WT) 6 5 4 3 2 1 0 0 2 4 6 8 10 12 14 16 18 20 22 24 SUPPLY VOLTAGE ： Vcc [V] Technical Note [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] 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] CIRCUIT ＣURRENT ： Icc [mA] OUTPUT VOLTAGE ： VOUT [V] 0 2 4 6 8 10 12 14 16 18 20 22 24 SUPPLY VOLTAGE ： Vcc [V] OUTPUT VOLTAGE ： VOUT [V] 0 2 4 6 8 10 12 14 16 18 20 22 24 SUPPLY VOLTAGE ： Vcc [V] Fig.13 Circuit Current [BA50DD0WT] DROPOUT VOLTAGE ： VDRP[mV] Fig.14 Input Stability Fig.15 Input Stability (Io=2A) [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 0.0 800 700 600 500 400 300 200 100 0 [BA50DD0WT] 60 RIPPLE REJECTION ： R.R. [dB] 50 40 30 20 10 0 OUTPUT VOLTAGE ： V OUT [V] 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] 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 OUTPUT CURRENT ： IOUT [A] 10 100 1000 10000 100000 1000000 FREQUENCY ： f [Hz] Fig.16 Load Stability Fig.17 Input/Output Voltage Difference Fig.18 Ripple Rejection Characteristics [BA50DD0WT] 5.2 OUTPUT VOLTAGE ： VOUT [V] [BA50DD0WT] 200 180 [BA50DD0WT] 800 CONTROL CURRENT:ICTL(µA) 700 600 500 400 300 200 100 0 5.1 CIRCUIT CURRENT (mA) 160 140 120 100 80 60 40 20 5.0 4.9 4.8 -40 -20 0 20 40 60 80 100 AMBIENTTEMPERATURE [℃] 0 0.0 0.5 1.0 1.5 OUTPUT CURRENT ： IOUT [A] 2.0 0246 8 10 12 14 16 18 20 22 24 CONTROL VOLYAGE:Vctl（V) Fig.19 Temperature Characteristics Fig.20 Circuit Current by Load Level [BA50DD0WT] Fig.21 CTL Voltage vs. CTL Current 8 OUTPUT VOLTAGE ： VOUT [V] 7 6 5 4 3 2 1 0 [BA50DD0WT] 8 OUTPUT VOLTAGE ： VOUT[V] 7 6 5 4 3 2 1 0 8 OUTPUT VOLTAGE ： VOUT [V] [BA50DD0WT] 6 4 2 0 2 4 6 8 10 12 14 16 18 20 22 24 CONTROL VOLTAGE ： VCTL [V] 0 5 10 15 20 25 30 35 SUPPLY VOLTAGE ： Vcc [V] 40 0 130 140 150 160 170 180 190 AMBIENT TEMPERATURE ： Ta [℃] Fig.22 CTL Voltage vs. Output Voltage Fig.23 Overvoltage Operating Fig.24 Thermal Shutdown Circuit Characteristics www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 5/11 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 ●Block Diagrams BA□□CC0WFP/ BA□□DD0WHFP/ BA□□CC0WT/ BA□□DD0WT Fin GND(TO252-5･HRP5) Vcc Driver FIN Technical Note TOP VIEW PIN No. Pin Name 1 2 CTL Vcc OUT N.C GND Function Output voltage ON/OFF control Power supply voltage input Voltage output Unconnected terminal GND *2 Vref R2 1 2 345 TO252-5 1 2 3 45 HRP5 3 4 5 Fin N.C/GND Unconnected terminal/GND*1 OVP TSD OCP R1 TOP VIEW 1 2 3 4 5 CTL Vcc N.C. (TO252-5) OUT N.C. 1 2 3 45 TO220FP-5 *1 TO252-5=N.C.,TO220FP-5,HRP5=GND *2 TO252-5,HRP5 only GND (TO220FP-5,HRP5) Fig.25 BA□□CC0T/ BA□□CC0FP/ BA□□DD0T Fin GND(TO252-3) Vcc TOP VIEW Vref Driver FIN TOP VIEW PIN No. Pin Name 1 2 3 Fin Vcc OUT GND Function Power supply voltage input Voltage output GND *2 N.C/GND Unconnected terminal/GND*1 R2 OVP TSD OCP R1 1 2 3 12 3 TO220FP-3 *1 TO252-3=N.C.,TO-220FP3=GND *2 TO252-3 only TO252-3 1 2 3 Vcc N.C. (TO252-3) GND (TO220FP-3) OUT Fig.26 ●Input / Output Equivalent Circuit Diagrams < BA□□DD0 Series > Vcc < BA□□CC0 Series > Vcc Vcc 10kΩ OUT 25kΩ OUT 25kΩ 10kΩ R2 39kΩ CTL 31kΩ 2kΩ R2 CTL R1 R1 Fig.27 Fig.28 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 Power Dissipation:Pd(W) 7 6 5 4 3 2 1 0 0 25 50 75 100 Ambient temperature:Ta( ℃） 125 150 ①2.3W ②5.5W Technical Note TO220FP-5 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 ㎜ ) 25 When using a maximum heat sick : θj-c=6.25(℃/W) When using an IC alone : θj-6=62.5(℃/W) 2.0 TO252-5 Mounted on a Rohm standard board Board size : 70×70×1.6 ㎜ Copper foil area :7×7 ㎜ TO252-5θja=96.2(℃/W) 1.30 20 Power Dissipation:Pd(W) (1)20.0 1.6 ③7.3W Power Dissipation:Pd(W) 15 1.2 10 0.8 5 (2)2.0 0.4 0 0 25 50 75 100 Ambient temperature:Ta(℃） 125 150 0.0 0 25 50 75 100 125 Ambient temperature:Ta( ℃） 150 Fig.29 Fig.30 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 Solving this for load current IO in order to operate within the acceptable loss: (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 Io≦ Pd – Vcc×Icca Vcc－Vo Vcc： Input voltage Vo： Output voltage Io： Load current Vcca： Circuit current 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 ●Peripheral Circuit Considerations Technical Note ・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 EFFECTIVE SERIES RESISTANCE:ESR [Ω] 100 EFFECTIVE SERIES RESISTANCE:ESR [Ω] Unstable operating region 100 Unstable operating region 10 Stable operating region 1 10 OUT IC 22μF Stable operating region 1 0.1 Unstable operating region Unstable operating region 0.1 0 200 800 600 400 OUTPUT CURRENT：lo(mA) 1000 1 1 10 OUTPUT 100 CURRENT：lo(mA) 1000 10000 Fig.32 Output Equivalent Circuit Fig.33 ESR-Io Characteristics (BA□□CC0) 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 ●Other Points of Caution 1) Protection Circuits Technical Note 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 CTL GND OUT 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 (Pin A) E GND P+ N N N P Parasitic element or transistor GND P P+ N P Parasitic element GND (Pin A) Parasitic element GND Resistor (Pin B) B P+ N N P P+ N C E GND Parasitic element or transistor 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 ●Ordering part number Technical Note B Part No. A 3 3 C C 0 W Shutdown switch W : Includes switch H F P - T R Output voltage Series CC0 : 1A DD0 : 2A Package HFP ：HRP5 FP ：TO252-3 TO252-5 T ：TO220FP-3 TO220FP-5 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 9.395±0.125 (MAX 9.745 include BURR) 1.017±0.2 Tape 1.905±0.1 Embossed carrier tape 2000pcs TR direction the at right when you ( The on the leftishand1pin of product is thethe upperthe right hand hold ) reel and you pull out tape on 8.82 ± 0.1 (6.5) Quantity Direction of feed 0.835±0.2 1.523±0.15 10.54±0.13 8.0±0.13 (7.49) 1pin 1.2575 1 2 3 4 5 5.5° 4.5°+4.5° − +0.1 0.27 −0.05 1.72 0.73±0.1 0.08 S S 0.08±0.05 Direction of feed (Unit : mm) Reel ∗ Order quantity needs to be multiple of the minimum quantity. TO252-3 6.5±0.2 1.5±0.2 Tape C0.5 2.3±0.2 0.5±0.1 Embossed carrier tape 2000pcs E2 The direction is the 1pin of product is at the lower left when you hold +0.2 5.1 -0.1 Quantity Direction of feed FIN 5.5±0.2 9.5±0.5 ( reel on the left hand and you pull out the tape on the right hand ) 0.65 0.75 2.3±0.2 0.8 0.65 0.5±0.1 2.3±0.2 1.0±0.2 2.5 1 2 3 1.5 1pin Direction of feed (Unit : mm) Reel ∗ Order quantity needs to be multiple of the minimum quantity. TO252-5 6.5±0.2 +0.2 5.1 -0.1 2.3±0.2 C0.5 0.5±0.1 Tape Quantity Direction of feed Embossed carrier tape 2000pcs E2 The direction is the 1pin of product is at the lower left when you hold 1.5±0.2 FIN 5.5±0.2 9.5±0.5 ( reel on the left hand and you pull out the tape on the right hand ) 0.8 0.5±0.1 0.5 1.27 1.0±0.2 2.5 123 45 1.5 1pin Direction of feed (Unit : mm) Reel ∗ Order quantity needs to be multiple of the minimum quantity. www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 10/11 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 TO220FP-3 +0.3 10.0 −0.1 +0.3 4.5 −0.1 φ3.2±0.1 +0.2 2.8 −0.1 Container Quantity Direction of feed Tube 500pcs Direction of products is fixed in a container tube +0.4 17.0 −0.2 12.0±0.2 13.5Min. 5.0±0.2 8.0±0.2 1.8±0.2 7.0 +0.3 −0.1 1.3 0.8 2.54±0.5 0.55 +0.1 −0.05 2.6±0.5 2.54±0.5 12 3 (Unit : mm) ∗ Order quantity needs to be multiple of the minimum quantity. TO220FP-5 1.8±0.2 +0.3 10.0−0.1 +0.3 7.0 −0.1 +0.3 4.5 −0.1 φ3.2±0.1 +0.2 2.8 −0.1 Container Quantity Direction of feed Tube 500pcs Direction of products is fixed in a container tube +0.4 17.0 −0.2 12.0±0.2 13.5Min. 8.0±0.2 0.7 1.2 0.8 1.778 0.5±0.1 2.85 12345 (Unit : mm) ∗ Order quantity needs to be multiple of the minimum quantity. 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. 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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