Low-Saturation voltage 300mA LDO Monolithic IC MM334x Series
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- Rosalyn Gibbs
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1 Low-Saturation voltage 3mA LDO Monolithic IC MM334x Series Low-Saturation voltage 3mA LDO MM334x Series Outline This IC is a 3mA LDO with an ultra-low saturation voltage. This device features a 3 ma current capability and high-value ripple rejections of 7dB typ. for protection, it includes an over-current protection circuit and a thermal shutdown circuit. Features 1. Supply Current 45µA typ. (No-load).1µA typ. (OFF) 2. Output Voltage Range 1.2V~5.V 3. Output Voltage accuracy VOUT±2% 4. Dropout Voltage.16V (IO=3mA) 5. Line Regulation.2%/V 6. Load Regulation 5mV typ. (IO=1~3mA) 7. Ripple rejection 7dB typ. (f=1khz) 8. Thermal shutdown 9. Dropout capacitor 1µF Package SSON-6A SOP-8D SOT-25A Applications 1. Mobile phones 2. Digital cameras 3. TVs 4. DVD Blu-ray recorder
2 Low-Saturation voltage 3mA LDO MM334x Series Block Diagram VDD VOUT CE Bias Thermal Shutdown Current Limit Vref GND Pin Assignment SSON-6A (TOP VIEW) SOP-8D (TOP VIEW) SOT-25A (TOP VIEW) 1 VDD 2 NC 3 VOUT 4 NC 5 GND 6 CE 1 VO 2 NC 3 GND 4 NC 5 CE 6 NC 7 NC 8 VDD 1 VDD 2 GND 3 CE 4 NC 5 VOUT
3 Low-Saturation voltage 3mA LDO MM334x Series Pin Description SSON-6A Pin No. Pin name Functions 1 VDD Voltage supply pin 2,4 NC No connection 3 VOUT Output pin 5 GND GND pin 6 CE ON/OFF Control pin CE VOUT Low OFF High ON Connect CE pin with VDD pin, when it is not used. SOT-25A Pin No. Pin name Functions 1 VDD Voltage supply pin 2 GND GND pin SOP-8D Pin No. Pin name Functions 1 VOUT Output pin 2,4 NC No connection 3 GND GND pin 5 CE ON/OFF Control pin CE VOUT Low OFF High ON Connect CE pin with VDD pin, when it is not used. 6,7 NC No connection 8 VDD Voltage supply pin 3 CE ON/OFF Control pin CE VOUT Low OFF High ON Connect CE pin with VDD pin, when it is not used. 4 NC No connection 5 VOUT Output pin Absolute Maximum Ratings (Except where noted otherwise Ta=25 C) Item Symbol Ratings Units Storage Temperature TSTG 55~+15 C Supply Voltage VDD 6.5 V CE input Voltage VCE -.3~VDD+.3 V Output Voltage VOUT -.3~VDD+.3 V Output Current Iomax 35 ma 95(Note1) SOP-8D Power Dissipation Pd 18(Note2) SSON-6A mw 35(Note3) SOT-25A Note1 : With the double sided PC Board of glass epoxy (Copper plane 8%, t mm) Note2 : With the double sided PC Board of glass epoxy (Copper plane 8%, t mm) Note3 : With the double sided PC Board of glass epoxy (Copper plane 6%, t mm)
4 Low-Saturation voltage 3mA LDO MM334x Series Recommended Operating Conditions (Except where noted otherwise Ta=25 C) Item Symbol Ratings Units Operating Ambient Temperature TJOP -4~85 C Operating Voltage VOP 2~6 V Output Current IO ~3 ma Electrical Characteristics 1 (Except where noted otherwise VDD=VOUT(typ.)+1V, VCE=VDD, Ta=25 C) Item Symbol Measurement conditions Min. Typ. Max. Units Input Current(OFF) IDDoff VCE=V.1 1. µa No-Load Input Current IDD IOUT=mA 45 7 µa Output Voltage VOUT IOUT=3mA V Line Regulation VLINE VDD=Vo(typ.)+.5~6V, IOUT=3mA (VOUT 1.6V, VDD=2.2~6V).2.1 %/V Load Regulation VLOAD 1mA IOUT 3mA 5 12 mv Dropout Voltage Vio Please refer to another page V Ripple Rejection 1 (Note4) RR1 f=1khz, Vripple=.5V, IOUT=3mA (VOUT 1.7V, VDD=VOUT+1.2V) 7 db Ripple Rejection 2 (Note4) RR2 f=1khz, Vripple=.5V, IOUT=3mA (VOUT 1.7V, VDD=VOUT+1.2V) 5 db VOUT Temperature Coefficient (Note4) VOUT / T IOUT=3mA -4 C TOP 85 C ±1 ppm/ C Output Noise Voltage (Note4) Vn fbw=1~1khz IOUT=3mA 3 µvrms Output Short-circuit Current (Note4) Ilim VOUT=V 4 ma CE Pull-down Resistance Rpd MΩ CE High Threshold Voltage VCEH 1.5 VDD V CE Low Threshold Voltage VCEL.3 V Output NMOS ON resistance RDON VCE=V VDD=4V(VOUT<3V) 6 Ω Note4 : The parameter is guaranteed by design.
5 Low-Saturation voltage 3mA LDO MM334x Series Electrical Characteristics 2 (Except where noted otherwise VDD=VO(typ.)+1V, VCE=VDD, Ta=25 C) Item Output Voltage Output Voltage Dropout Voltage Vo1, Vo2 Vo1, Vo2 (V) Vio1, Vio2 (V) Measurement Conditions Min. Typ. Max. Measurement Conditions Min. Typ. Max. 1.2V SSON-6A(Note5) 1.3V SOP-8D(Note6) 1.4V SOT-25A(Note5) 1.5V V Io=3mA V V V Vo 2.V 1.9V Io=3mA 2.V V V V V Vo 2.7V 2.4V Io=3mA 2.5V V V V V V V 1mA Io 3mA V V V V V V V V Vo 5.V 3.9V Io=3mA 4.V V V V V V V V V V V Note5 : The parameter is not guaranteed in the model Vo=1.4V or less. Note6 : The parameter is not guaranteed in the model less than Vo=1.4V.
6 Low-Saturation voltage 3mA LDO MM334x Series Measuring Circuit A VDD VOUT A V A CE GND Application Circuit VDD VOUT CE GND Temperature Characteristics : B (Reference example of external parts) Output capacitor Ceramic capacitor 1µF Input capacitor Ceramic capacitor 1µF Note 1. The output capacitor is required between output and GND to prevent oscillation. 2. The ESR of capacitor must be defined in ESR stability area. It is possible to use a ceramic capacitor without ESR resistance for output. The ceramic capacitor must be used more than 1.µF or and B temperature characteristics. 3. The wire of VCC and GND is required to print full ground plane for noise and stability. 4. The input capacitor must be connected a distance of less than 1cm from input pin. 5. In case the output voltage is above the input voltage, the overcurrent flow by internal parastic diode from output to input.
7 Low-Saturation voltage 3mA LDO MM334x Series Characteristics (Vo=1.2V) (Except where noted otherwise VDD=VOUT (typ.) +1V, VCE=VDD, Ta=25 C) Output - Input voltage 2. Input current - Input voltage 2 RL= RL= RL=4 RL=4 Input current (µa) Output voltage - Output current Load regulation Load regulation (mv) Line regulation 1.3 RL=4 Output voltage - Ambient tempereture 1.3 RL= Output Voltage VO (V) Ambient tempereture Ta (ºC)
8 Low-Saturation voltage 3mA LDO MM334x Series Ripple Rejection ESR Stable area Ripple rejection (db) IO=15mA IO=3mA IO=1mA Frequency (khz) ESR ( ) Instable area Stable area Load transient response (Io=1 15mA) Load transient response (Io=1 3mA) Cin=1µF,CO=1µF Cin=1µF,CO=1µF IO : 1mA/div 2µS/div IO : 2mA/div 2µS/div VO : 5mV/div VO : 1mV/div 2µS/div CE : 1V/div VO : 5m/div
9 Low-Saturation voltage 3mA LDO MM334x Series Characteristics (Vo=3.V) (Except where noted otherwise VDD=VOUT (typ.) +1V, VCE=VDD, Ta=25 C) Output - Input voltage Input current - Input voltage RL= RL= RL=1 RL=1 Input current (µa) Input voltage (V) Output voltage - Output current Load regulation Output voltage (V) Load regulation (mv) Line regulation Dropout voltage RL= Dropout voltage Vio (mv)
10 Low-Saturation voltage 3mA LDO MM334x Series Ripple Rejection Output voltage - Ambient tempereture Ripple Rijection (db) IO=15mA.1 1 IO=3mA IO=1mA Frequency (khz) Ambient tempereture (ºC) RL= Load transient response (Io=1 15mA) Load transient response (Io=1 3mA) Cin=1µF,CO=1µF Cin=1µF,CO=1µF IO : 1mA/div 2µS/div IO : 2mA/div 2µS/div VO : 5mV/div VO : 1mV/div ESR Stable area 1 Instable area 2µS/div ESR ( ) 1.1 Stable area CE : 2V/div VO : 1V/div
11 Low-Saturation voltage 3mA LDO MM334x Series Characteristics (Vo=5.V) (Except where noted otherwise VDD=VOUT (typ.) +1V, VCE=VDD, Ta=25 C) Output - Input voltage Input current - Input voltage 6. 2 RL= RL= RL=166 RL= Input current (µa) Output voltage - Output current Load regulation 6 3 Output voltage (V) Load regulation (mv) Output current (ma) Line regulation Dropout voltage RL= Output voltage (V) Dropout voltage Vio (mv)
12 Low-Saturation voltage 3mA LDO MM334x Series Ripple Rejection Output voltage - Ambient tempereture Ripple Rijection (db) IO=15mA.1 1 IO=3mA IO=1mA Frequency (khz) Output voltage (V) RL= Ambient tempereture (ºC) Load transient response (Io=1 15mA) Load transient response (Io=1 3mA) Cin=1µF,CO=1µF Cin=1µF,CO=1µF IO : 1mA/div 2µS/div IO : 2mA/div 2µS/div VO : 5mV/div VO : 1mV/div ESR Stable area 1 Instable area 2µS/div ESR ( ) 1.1 Stable area CE : 2V/div VO : 2V/div
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