NJM2829

NJM2829 Very Low Output Negative Voltage Regulator GENERAL DESCRIPTION The NJM2829 is a negative voltage regulator that delivers up to 100mA output current with the output voltage of -0.8 to -1.3V with ON/OFF control. Advanced Bipolar technology achieves low noise, high ripple rejection, and high precision voltage. It has soft-start and shunt SW function. 2.2µF Output capacitor and small package can make NJM2829 suitable for portable items PACKAGE OUTLINE NJM2829F3 FEATURES • High Precision Output VO±1.5% • High Ripple Rejection 80dB typ. (f=1kHz, VO=-1.0V version ) • Output Capacitor with 2.2µF ceramic capacitor • Output Current IO(max)=100mA • ON/OFF Control (Positive voltage control from 0V to +5V) • Soft-start Function • Shunt SW Function • Built-in Thermal Overload Protection and Short Circuit Current Limit Protection • Bipolar Technology • Package Outline SC-88A PIN CONNECTION 5 4 123 1. 2. 3. 4. 5. GND VIN VOUT CONTROL CS NJM2829F3 BLOCK DIAGRAM GND Thermal Protection CS Bandgap Reference Current Limit CONTROL VIN Output Control VOUT Ver.2011-01-27 -1- NJM2829 OUTPUT VOLTAGE LANK LIST Vout Device Name NJM2829F3 -008 -0.8V NJM2829F3 -095 -0.95V NJM2829F3 -010 -1.0V NJM2829F3 -012 -1.2V NJM2829F3 -013 -1.3V Output Voltage Range: -0.8V to -1.3V ABABSOLUTE MAXIMUM RATINGS (Ta=25°C) PARAMETER SYMBOL RATINGS UNIT Input Voltage VIN -14 V Control Voltage VCONT +5 V Output Sink Current 10 mA ISINK(OFF) at OFF-state Power Dissipation PD 250(*1) mW Operating Temperature Topr - 40 ∼ +85 °C Storage Temperature Tstg - 40 ∼ +125 °C (*1): Mounted on glass epoxy board. (114.3×76.2×1.6mm : 2layer,FR-4) OPERATING VOLTAGE VIN=-3.2 ∼ -12V ELECTRICAL CHARACTERISTICS (VIN=3.2V, VCONT=3V, CIN=0.1µF, Co=2.2µF(Vo > -0.9V :Co=4.7µF) , Ta=25°C) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Output Voltage Vo Io=30mA -1.5% +1.5% V Quiescent Current IQ Io=0mA, except Icont 140 220 µA Quiescent Current VCONT=0V 100 nA IQ(OFF) at OFF-state 100 130 mA Output Current Io VO×0.9 0.10 %/V Line Regulation ∆Vo/∆VIN VIN=Vo-3.2V∼ -12V, Io=30mA Load Regulation 0.04 %/mA ∆Vo/∆Io Io=0∼60mA VIN=-4.0V,ein=200mVrms,f=1kHz, 80 dB Ripple Rejection RR Io=10mA,Vo=-1.0V Version Average Temperature ±50 ppm/°C Coefficient of Output ∆Vo/∆Ta Ta=0∼+85°C, Io=10mA Voltage f=10Hz∼80kHz, Io=10mA, Output Noise Voltage VNO 40 µVrms Vo=--1.0V Version CS Terminal Charge Current Ics VCS=0V 4 5.3 6.5 µA Output Resistance VCONT=0V 560 Ω RO(OFF) at OFF-state Control Current ICONT VCONT=1.6V 2 4 µA Control Voltage for 1.6 V VCONT(ON) ON-state Control Voltage for 0.6 V VCONT(OFF) OFF-state Input Voltage VIN -12 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. -2- Ver.2011-01-27 NJM2829 POWER DISSIPATION vs. AMBIENT TEMPERATURE NJM2829F3 Power Dissipation (Topr=-40~+85°C,Tj=125°C) 500 Power Dissipation PD(mW) 400 300 200 100 0 -50 -25 0 25 50 75 100 2Layers board(76.2×114.3×1.6mm, FR-4) Ambient Temperature Ta(°C) TEST CIRCUIT IQ 2.2µF*2 (Ceramic)) VIN 0.1µF A GND IOUT VOUT V VIN VOUT 0.047µF NJM2829 A V VCONT *2) Vo>-0.9V version: Co=4.7µ F(Ceramic) ICONT CONTROL CS Ver.2011-01-27 -3- NJM2829 TYPICAL APPLICATION ON/OFF control ON/OFF control can be achieved by applying positive control voltage to CONTROL terminal. Apply positive Vcont ("H") to make chip to be ON (Enabled), and either Vcont is "L" or open (High Z) to make chip to be OFF (Disabled). The relations between Vcont and the state is as follows: ON state Vcont +1.6V ≤ Vcont ≤ +5V ("H" level): OFF state Vcont 0V ≤ Vcont ≤ +0.6V ("L" level): Vcont +0.6V < Vcont < +1.6V ("L" level): Undefined In case ON/OFF control is not used, keep applying positive Vcont to CONTROL terminal to make chip ON. Note that negative Vcont does not make the chip enabled. 0.1 µ F 2.2 µ F*3 GND V IN V IN V OUT V OUT NJM2829 CONTROL CONTROL 0 .047 µ F CS CS R *3) Vo>-0.9V version: Co=4.7 µ F (Ceramic) * In the case of using a resistance "R" between VIN and control. The current flow into the control terminal while the IC is ON state (ICONT) can be reduced when a pull up resistance "R" is inserted between VIN and the control terminal. The minimum control voltage for ON state (VCONT (ON)) is increased due to the voltage drop caused by ICONT and the resistance "R". * Input Capacitance CIN Input Capacitance CIN is required to prevent oscillation and reduce power supply ripple for applications with high power supply impedance or a long power supply line. Use the CIN value of 0.1µF greater to avoid the problem. CIN should connect between GND and VIN as short as possible. *Output Capacitance CO Output capacitor (Co) is required for a phase compensation of the internal error amplifier. The capacitance and the equivalent series resistance (ESR) influences stability of the regulator. This product is designed to work with a low ESR capacitor for the Co; however, use of recommended capacitance or greater value is essential for stable operation. Use of a smaller Co may cause excess output noise or oscillation of the regulator due to lack of the phase compensation. Therefore, use Co with the recommended capacitance or greater value and connect between Vo terminal and GND terminal with minimal wiring. The recommended capacitance depends on the output voltage. Low voltage regulator requires greater value of the Co. Thus, check the recommended capacitance for each output voltage. Use of a greater Co reduces output noise and ripple output, and also improves transient response of the output voltage against rapid load change. -4Ver.2011-01-27 NJM2829 TYPICAL CHARACTERISTICS 1.2 NJM2829_-1.0V Output Voltage vs. Input Voltage @:Ta=25 C Co=2.2uF(Ceramic) o NJM2829_-1.0V Output Voltage vs. Output Current 1.2 1 Io=0A 0.8 0.8 1 Io=30mA 0.6 Io=100mA 0.4 0.4 0.6 0.2 0.2 @:Ta=25 C VIN=-3.2V Co=2.2uF(Ceramic) 0 50 100 150 200 o 0 1.6 1.8 2 2.2 2.4 2.6 2.8 3 0 Input Voltage : V IN(V) Output Current : Io(mA) 20 NJM2829_-1.0V Ground Pin Current vs. Output Current @ Ta=25C Vin=-3.2V Vcont=3V Co=2.2uF o NJM2829_-1.0V Load Regulation vs. Output Current 0 -10 15 -20 -30 10 -40 -50 5 -60 @:Ta=25 C VIN=-3.2V Co=2.2uF(Ceramic) o -70 0 0 50 100 150 -80 0 50 100 150 200 Output Current : Io(mA) Output Current : Io(mA) 30 o NJM2829_-1.0V Control Current vs. Control Voltage 1.2 NJM2829_-1.0V Output Voltage vs. Control Voltage @:Ta=25 C VIN=-3.2V Co=2.2uF(Ceramic) 25 Io=30mA 1 Rc=0Ω 20 0.8 15 R c=0 Ω Rc=50k Ω 0.6 Rc=50k Ω 10 0.4 Rc=100k Ω 5 Rc=100k Ω 0.2 0 0 1 2 3 4 5 @:Ta=25 C VIN=-3.2V Co=2.2uF(Ceramic) Io=30mA 0 0.5 1 1.5 2 2.5 3 o 0 Control Voltage : V Cont (V) Control Voltage : V Cont (V) Ver.2011-01-27 -5- NJM2829 500 NJM2829_-1.0V Quiescent Current vs. Input Voltage @:Ta=25 C Output is open. Co=2.2uF(Ceramic) o 300 NJM2829_-1.0V Peak Output Current vs. Input Voltage @:Ta=25 C Co=2.2uF(Ceramic) o 400 250 200 300 150 200 100 100 50 0 0 2 4 6 8 10 12 14 0 2 4 6 8 10 12 14 Input Voltage : V IN(V) Input Voltage : V IN(V) 120 NJM2829_-1.0V Output Noise Voltage vs. Output Current @:Ta=25 C VIN=-3.2V Co= 2.2uF(Ceramic) 4.7uF(Ceramic) o 100 NJM2829_-1.0V Ripple Rejection Ratio vs. Frequency Io=30mA Io=0mA 90 100 80 80 FLAT 60 70 Io=100mA 60 50 40 40 20 LPF:80k 30 @:Ta=25 C VIN=-3.2V ein=200mVrms Co=2.2uF(Ceramic) o 0 1u 10u 100u 1m 10m 100m 20 10 10 100 100 1k 1000 10k 104 100k 105 Output Current : Io(A) Frequency : f (Hz) 100 NJM2829_-1.0V Ripple Rejection vs. Output Current 100 NJM2829_-1.0V Equivalent Serise Resistance vs. Output Current @:Ta=25 C Co=2.2uF(Ceramic) o 90 f=1kHz 80 10 70 f=10kHz 60 STABLE REGION 1 50 40 @:Ta=25 C VIN=-3.2V ein=200mVrms Co=2.2uF(Ceramic) 0.01 0.1 1 10 100 o 0.1 30 20 0.001 0.001 0.01 0.1 1 10 100 Output Current : Io(mA) Output Current : Io(mA) -6- Ver.2011-01-27 NJM2829 NJM2829_-1.0V Control Voltage v.s. Temperature 2 @:VIN=-3.2V Io=30mA Co=1uF(Ceramic) 8 10 NJM2829_1.0V Control Current vs. Temperature @:VIN=-3.2V Output : No Load Co=2.2uF Vcont=1.6V 1.5 6 1 4 0.5 2 0 -50 0 50 100 o 0 150 -50 0 50 100 o 150 Temperature : Ta ( C) Temperature : Ta ( C) 10 NJM2829_-1.0V CS Charge Current vs. Temperature @:VIN=-3.2V CS is short to ground.(VI) Co=2.2uF(Ceramic) 250 NJM2829_-1.0V Quiescent Current vs. Temperature 8 200 6 150 4 100 2 50 @:VIN=-3.2V Output is open. Co=2.2uF(Ceramic) Icont, including -50 0 50 100 150 0 -50 0 50 100 150 0 Temperature : Ta ( o C) Temperature : Ta ( oC) 0.1 NJM2829_-1.0V Line Regulation vs. Temperature @:dVIN=-3.2-12V Io=30mA Co=2.2uF(Ceramic) 0.03 NJM2829_-1.0V Load Regulation vs. Temperature @:VIN=-3.2V Io=0-60mA Co=2.2uF(Ceramic) 0.025 0.05 0.02 0 0.015 0.01 -0.05 0.005 -0.1 -50 0 50 100 o 0 150 -50 0 50 100 150 Temperature : Ta ( C) Temperature : Ta ( o C) Ver.2011-01-27 -7- NJM2829 1.2 NJM2829_-1.0V Output Voltage vs. Temperature 200 NJM2829_-1.0V Short Circuit Current vs. Temperature @:VIN=-3.2V Output is short to ground.(VI) Co=2.2uF(Ceramic) 0.9 150 0.6 100 0.3 50 0 -50 @:VIN=-3.2V Io=30mA Co=2.2uF(Ceramic) 0 50 100 o 0 150 200 -50 0 50 100 150 Temperature Ta ( C) Temperature : Ta ( o C) 1.05 NJM2829_-1.0V Output Voltage vs. Temperature @:VIN=-3.2V Io=30mA Co=2.2uF(Ceramic) 200 NJM2829_-1.0V Maximum Output Current vs. Temperature 1.025 150 1 100 0.975 50 @:VIN=-3.2V Vo=Vo x 0.9 Co=2.2uF(Ceramic) 0.95 -50 0 50 100 o 150 0 -50 0 50 100 150 Temperature Ta ( C) Temperature : Ta ( o C) -8- Ver.2011-01-27 NJM2829 NJM2829_-1.0V Line Transient Response -0.88 -0.90 -1 -2 -0.90 -0.92 NJM2829_-1.0V Load Transient Response 150 100 Output Current Output Voltage:Vo(V) Output Voltage:Vo(V) Input Voltage -0.94 -0.96 -0.98 -1.00 @:Ta=25°C Vcont=3.0V Io=30mA Co=2.2uF(ceramic) Cin=0uF -4 -5 -6 -7 Input Voltage:Vin(V) -0.92 -3 -0.94 -0.96 -0.98 -1.00 -1.02 -1.04 -1.06 50 0 -50 -100 Output Voltage Output Voltage -1.02 -1.04 -8 -9 @:Ta=25°C Vcont=3.2V Io=50-100mA Co=2.2uF(ceramic) Cin=0.1uF 120 160 200 -150 -200 -250 0 40 80 120 160 200 0 40 80 Time:t(us) Time:t(µs) NJM2829_-1.0V ON/OFF Transient Response without road 2 1.5 4 2 1.5 NJM2829_-1.0V ON/OFF Transient Response 4 Control Voltage 2 Control Voltage @:Ta=25°C Vcont=3.2V Io=30mA Co=2.2uF(ceramic) Cs=0.047uF 2 0 -2 -4 -6 -8 Control Voltage:Vcont(V) Output Voltage:Vo(V) 1 0.5 0 -0.5 -1 -1.5 -2 @:Ta=25°C Vcont=3.2V Io=0mA Co=2.2uF(ceramic) Cs=0.047uF 0 -2 -4 -6 -8 1 0.5 0 -0.5 -1 Output Voltage Output Voltage -1.5 -2 -10 -12 -10 -12 0 10 20 30 40 50 0 10 20 30 40 50 Time:t(ms) Time:t(ms) [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. Ver.2011-01-27 Control Voltage:Vcont(V) Output Voltage:Vo(V) -9- Output Current:Io(mA)