LOW DROPOUT VOLTAGE REGULATOR GENERAL DESCRIPTION The is a low dropout voltage regulator. Advanced Bipolar technology achieves low noise, high ripple rejection and low quiescent current. It features small SC-88A package. FEATURES High Ripple Rejection 7dB typ. (f=khz,vo=v Version) Output Noise Voltage Vno=µVrms typ. () Output capacitor with.uf ceramic capacitor (Vo.7V) Output Current Io(max.)=mA High Precision Output Vo±.% Low Dropout Voltage.V typ. (Io=6mA) ON/OFF Control (Active High) Internal Short Circuit Current Limit Internal Thermal Overload Protection Bipolar Technology Package Outline SC88A PIN CONFIGURATION PACKAGE OUTLINE F F. CONTROL (Active High). GND. NOISE BYPASS.. EQUIVALENT CIRCUIT Cont Thermal Protection Bandgap Reference Noise Bypass GND
OUTPUT VOLTAGE RANK LIST Device Name Device Name Device Name F-.V F-8.8V F-.V F-8.8V F-8.8V F-8.8V F-9.9V F-.V F-.V F-.V F-.V F-6.6V F-.V F-.V F-7.7V F-6.6V F-.V F-.V F-7.7V F-.V ABSOLUTE MAXIMUM RATINGS (Ta= C) PARAMETER SYMBOL RATINGS UNIT Input Voltage + V Control Voltage V CONT +(*) V Power Dissipation P D (*) mw Operating Temperature Topr +8 C Storage Temperature Tstg + C (*):When input voltage is less than +V, the absolute maximum control voltage is equal to the input voltage. (*):Mounted on glass epoxy board based on EIA/JEDEC. (.x76.x.6mm: Layers) Operating voltage =+.V +.V (In case of Vo<.V) ELECTRICAL CHARACTERISTICS (=Vo+V, C IN=.µF, Co=.uF: Vo.7V (Co=.uF: Vo.6V),, Ta= C) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Output Voltage Vo Io=mA -.% +.% V Quiescent Current I Q Io=mA, expect Icont 8 µa Quiescent Current at Control OFF I Q(OFF) V CONT=V na Output Current Io Vo.V - ma Line Regulation Vo/ =Vo+V Vo+6V, Io=mA. %/V Load Regulation Vo/ Io Io= 6mA. %/ma Dropout Voltage(*) V I O Io=6mA..8 V Ripple Rejection RR ein=mvrms,f=khz, Io=mA, Vo=V Version 7 db Average Temperature Coefficient of Output Vo/ Ta Ta= 8 C, Io=mA ± ppm/ C Voltage Output Noise Voltage V NO f=hz 8kHz, Io=mA, Vo=V Version µvrms Control Voltage for ON-state V CONT(ON).6 V Control Voltage for OFF-state V CONT(OFF).6 V (*): The output voltage excludes under.v. The above specification is a common specification for all output voltages. Therefore, it may be different from the individual specification for a specific output voltage.
TEST CIRCUIT A I IN.µF.µF * (ceramic) I OUT V A I CONT CONTROL NOISE BYPASS V V CONT GND * Vo.6V version: Co=.µF(ceramic)
TYPICAL APPLICATION In the case where ON/OFF Control is not required:.µf R ( kω) CONTROL GND NOISE BYPASS.µF * * Vo.6V version: Co=.µF Connect control terminal to terminal In use of ON/OFF CONTROL:.µF.µF * R CONTROL GND NOISE BYPASS * Vo.6V version: Co=.µF State of control terminal: H output is enabled. L or open output is disabled. Noise bypass Capacitance Cp Noise bypass capacitance Cp reduces noise generated by band-gap reference circuit. Noise level and ripple rejection will be improved when larger Cp is used. Use of smaller Cp value may cause oscillation. Use the Cp value of.µf greater to avoid the problem. In the case of using a resistance "R" between and control. The current flow into the control terminal while the IC is ON state (I CONT ) can be reduced when a pull up resistance "R" is inserted between and the control terminal. The minimum control voltage for ON state (V CONT (ON) ) is increased due to the voltage drop caused by I CONT and the resistance "R". The I CONT is temperature dependence as shown in the "Control Current vs. Temperature" characteristics. Therefore, the resistance "R" should be carefully selected to ensure the control voltage exceeds the V CONT (ON) over the required temperature range.
POWER DISSIPATION vs. AMBIENT TEMPERATURE F Power Dissipation (Topr=-~+8,Tj= ) Power Dissipation P D (mw) On Board(. 76..6mm, FR-) - - 7 Ambient Temperature Ta( )
TYPICAL CHARACTERISTICS.. _.V Output Voltage vs. Input Voltage Cp=.uF. _.V Output Voltage vs. Output Current Output Voltage : Vo (V) Io=A.9 Io=mA.8 Io=8mA.7.7.8.9.... Input Voltage : (V) Output Voltage : Vo(V)... VIN=V Cp=.mF _.V Ground Pin Current vs. Output Current VIN=V Cp=.mF.. _.V Dropout Voltage vs. Output Current Cp=.mF Ground Pin Current : IGND (ma) Dropout Voltage : dvi-o (V).... 6 8 Output Current : I O(mA) 6 8 _.V Control Current vs. Control Voltage _.V Output Voltage vs. Control Voltage Control Current : Icont( µa) Rc=Ω VIN=V Io=mA Rc=kΩ Rc=kΩ.... Control Voltage : Vcont(V) Output Voltage : Vo(V).... Rc=Ω Rc=kΩ Rc=kΩ VIN=V Io=mA... Control Voltage : Vcont(V)
TYPICAL CHARACTERISTICS Load Regulation : dvo/dio (mv) - - - - - -6-7 _.V Load Regulation vs. Output Current -8 VIN=V Peak Output Current : IoMAX(mA) _.V Peak Output Current vs. Input Voltage 6 8 Input Voltage : VIN(V) Quiescent Current : IQ ( µa) _.V Quiescent Current vs. Input Voltage Output is open. including Icont Output Noise Voltage : Vn( µvrms) 8 6 _.V Output Noise Voltage vs. Output Current Co=.µF(Ceramic) VIN=.V LPF:kHz Input Voltage : VIN(V)... _.V Ripple Rejection Ratio vs. Frequency _.V Ripple Rejection vs. Output Current Ripple Rejection Ratio : RR (db) 9 8 7 6 Io=mA VIN=.V ein=mvrms Io=mA Io=mA Ripple Rejection : RR (db) 9 8 7 6 VIN=V ein=mvrms f=khz f=khz k k k Frequency : f (Hz)...
TYPICAL CHARACTERISTICS _.V Equivalent Serise Resistance vs. Output Current Equivalent Serise Resistance : ESR(Ω). Oscillation Free. µ µ µ m m m.. _.V Dropout Voltage vs. Ambient Temperature @:VIN=V Io=6mA.. _.V Output Voltage vs. Ambient Temperature @:VIN=V Io=mA Dropout Voltage : dvi-o (V)... Output Voltage Vo (V).9. - Ambient Temperature : Ta ( o C).9 - Ambient Temperature Ta ( o C) Control Voltage : VCONT(ON) (V). _.V Control Voltage vs. Ambient Temperature. @:VIN=V Io=mA - Ambient Temperature : Ta ( o C) Control Current : ICONT ( µa) 8 6 _.V Control Current v.s. Ambient Temperature @:VIN=V Output is open. VCONT=.6V - Temperature Ta ( o C)
TYPICAL CHARACTERISTICS _.V Quiescent Current vs. Ambient Temperature @:VIN=V Output is open. _.V Short Circuit Current v.s. Temperature @:VIN=V Output is short to ground. Quiescent Current : IQ ( µa) Short Circuit Current : ISC (ma) - Ambient Temperature : Ta ( o C) - Temperature : Ta ( o C) Line Regulation : dvo/dio (%/V).. -. _.V Line Regulation v.s. Temperature @:dvin=-9v Io=mA Load Regulation : dvo/dio (%/ma)...... _.V Load Regulation v.s. Temperature @:VIN=V Io=-6mA -. - Temperature : Ta ( o C) - Temperature : Ta ( o C) _.V Output Voltage vs. Ambient Temperature. Output Voltage Vo (V).. @:VIN=V Io=mA. - Ambient Temperature Ta ( o C)
TYPICAL CHARACTERISTICS 7 6 _V ON/OFF Transient Response without Load Control Voltage 7 6 Control Voltage _V ON/OFF Transient Response Output Voltage : Vo [V] Output Voltage VIN=V Io=mA - - - - - Control Voltage : Vo [V] Output Voltage : Vo [V] Output Voltage VIN=V Io=mA - - - - - Control Voltage : Vo [V] - - Time : t [S] - - 8 6 Time : t [ms]. _V Line Transient Response 7.8 _V Load Transient Response.8 6.6 Output Voltage : Vo [V].6.. Input Voltage Output Voltage.98.96 Io=mA.9-8 6 Time : t [µs] Input Voltage : [V] Output Voltage : Vo [V]...98.96.9 Output Current Output Voltage VIN=V - - -.9-8 6 Time : t [µs] - Output Current : Io [ma] [CAUTION] The specifications on this databook are only given for information, without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights.