Low-Saturation voltage 1.5A LDO Monolithic IC MM185x Series

Transcription

1 Low-Saturation voltage.5a LDO Monolithic IC MM85x Series Outline This IC is a.5a LDO with a low saturation voltage. In addition to a low-saturation voltage (.6V typ., IO=.5 A), the device has a low voltage output with a minimum of.9 V, and is therefore capable of low-voltage operation. This device is offered in the PKG TO-5-5 package featuring high heat dissipation and the small-sized PKG HSOP-8 package. For protection, it includes an over-current protection circuit and a thermal shutdown circuit. Features. Supply Current ma typ. (No-Load). Supply Current µa max. (OFF) 3. Output Voltage Range.9V~5.V 4. Output Voltage accuracy ±% 5. Dropout Voltage.6V typ. (IO=.5A) 6. Line Regulation mv typ. (VO+.5V~VO+.5V) 7. Load Regulation 9mV typ. (IO=~.5A) 8. Ripple rejection 65dB typ. (f=khz) 9. Thermal shutdown. Input & Output Capacitor µf Package TO-5-5A Applications. TV. Blu-ray / DVD recorder, STB

2 Block Diagram VIN Vo CIN µf Bias Co µf Cont Reference Driver Current limitter Thermal shutdown GND Cn.µF Pin Assignment TO-5-5A (TOP VIEW) Cont VIN 3 GND 4 Cn 5 VO (TOP VIEW) VOUT NC 3 GND 4 Cn 5 Cont 6 NC 7 NC 8 VIN

3 Pin Description TO-5-5A Pin No. Pin name Functions Internal equivalent circuit diagram Control pin Cont Cont Output 5k Low OFF High ON Input pin VIN The capacitor is required to connect with input pin more than µf Input circuit 3 GND Ground Noise decrease pin 4 Cn Connecting.µF capacitor can decrease output noise. If the noise decrease capacitor is not connected, the pin may be influenced by outside noise. Output pin 5 VOUT The capacitor must be connected with output pin more than µf.

4 Pin No. Pin name Functions Internal equivalent circuit diagram Output pin VOUT The capacitor must be connected with output pin more than µf. NC No connection 3 GND Ground Noise decrease pin 4 Cn Connecting.µF capacitor can decrease output noise. If the noise decrease capacitor is not connected, the pin may be influenced by outside noise. Control pin 5 Cont Cont Output 5k Low OFF High ON 6 NC No connection 7 NC No connection Input pin 8 VIN The capacitor is required to connect with input pin more than µf Input circuit

5 Absolute Maximum Ratings (Except where noted otherwise Ta=5 C) Item Symbol Ratings Units Storage Temperature TSTG 4~+5 C Supply Voltage VIN -.3~+ V Max Output Current IOUT max..8 A Power Dissipation Pd 5(Note) TO-5-5A 8(Note) mw Note : With the double sided PC Board of glass epoxy (Copper plane 8%, 5. t mm) Note : With the double sided PC Board of glass epoxy (Copper plane 8%, t mm) Recommended Operating Conditions (Except where noted otherwise Ta=5 C) Item Symbol Ratings Units Operating Temperature TOPR -4~+85 C Output Current IOUT ~.5 A Operating Voltage VOP VO(typ.)+.3~+(Note3) V Note3 : The Operating Voltage is (Vo+.35V)~V in the model less than VOUT=V. Electrical Characteristics (Except where noted otherwise VIN=VO+.5V, VCont=.8V, IO=mA, Ta=5 C) Item Symbol Measurement conditions Min. Typ. Max. Units No-Load Input Current ICC IO=mA ma Input Current(OFF) Iccoff VCont=V µa Output Voltage (Note5) VOUT.98. V Dropout Voltage (Note4, 6) Vio VIN=VOUT-.V, IO=.5A.6.38 V Line Regulation V VIN=VO+.5~VO+.5V, IO=mA mv Load Regulation(Note4) V IO=~.5A 9 5 mv VOUT Temperature Coefficient (Note4) VOUT / T Tj=-4~+85 C ppm/ C Ripple Rejection (Note4) RR f=khz Vripple=.5V, IO=5mA 5 65 db Output Noise Voltage (Note4) Vn fbw=~8khz Cn=.µF 6 fbw=~8khz Cn=OPEN 5 µvrms Cont Pin Input Current (Note7) ICont.3.6 µa Cont Pin High Threshold Level VContH.8 V Cont Pin Low Threshold Level VContL -.3. V Note4 : The parameter is guaranteed by design. Note5 : Please refer to another page. Note6 : The parameter is not guaranteed in the model less than VOUT=V. Note7 : Please refer to 'TYPICAL PERFORMANCE CHARACTERISTICS'.

6 Electrical Characteristics (Except where noted otherwise VIN=VO+.5V, IO=mA, Ta=5 C) Model No. Measurement Conditions Output Voltage Min. Typ. Max. MM85K MM85A MM85B.7..3 MM85C.7..3 MM85D MM85E MM85F MM85G MM85H MM85J MM85K MM85A MM85B MM85C MM85D MM85E MM85F MM85G MM85H MM85J MM85K VIN=VO+.5V MM853A IO=mA MM853B MM853C MM853D MM853E MM853F MM853G MM853H MM853J MM853K MM854A MM854B MM854C MM854D MM854E MM854F MM854G MM854H MM854J MM854K MM855A

7 Measuring Circuit TO-5-5A A A GND.µF 8 VIN 7 NC 6 NC 5 Cont Co VIN GND Cn VO A V VO NC GND Cn 3 4.µF.µF Ceramic A A V µf.µf µf Application Circuit TO-5-5A Input.µF Ceramic 8 VIN 7 NC 6 NC 5 Cont Co VIN GND GND Cn VO To load VO NC GND Cn 3 4.µF Ceramic/ B type.µf Ceramic Input voltage Cin µf Ceramic Ccn.µF Ceramic Co µf Ceramic To load Cin Cout Capacity Kind Capacity Kind Characteristics.µF or more Ceramic.µF or more Ceramic B type/x5r.µf or more Ceramic µf or more Ceramic B type/x5r Note. The output capacitor is required between output and GND to prevent oscillation.. The ESR of capacitor must be defined in ESR stability area. 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 cm from input pin. 5. The capacitor is connected to Cn must have low leakage current characteristics, because Cn pin is high impedance. 6. In case the output voltage is above the input voltage, the overcurrent flow by internal parasitic diode from output to input. In such application, the external bypass diode must be connected between output and input pin.

8 About Power Dissipation This IC's GND pin and Heat Spreader Bottom effectively radiate heat. By increasing these copper foil pattern area of PCB, Power dissipation improves. Please kindly design PCB pattern taking care of above features about power dissipation. 3 5 Power Dissipation(mW) 5 5 : t mm Double sided glass epoxy Copper plane 8% To-5-5A : 5. t mm Double sided glass epoxy Copper plane 8% Ambient Temperature( C) Land Pattern Recommendation 4.4mm TO-5-5A 5.34mm 3.mm.9mm.mm 4.7mm 5.6mm.mm.6mm Note : These Dimensions are the reference values..7mm.94mm.65mm

9 Characteristics (Vo=.V) (Except where noted otherwise VIN=VO+.5V, VCont=.8V, Cin=.µF, CO=.µF, CCn=.µF, Ta=5 C) Output - Input voltage.4. IO=5mA.8 IO=A.6 IO=75mA No Load input current Input current (ma) RL= Load regulation (mv) Load regulation Line regulation Output current (A) Line regulation (mv) IO=mA Dropout voltage Dropout voltage Dropout voltage (mv) VIN=.V Output current (ma) 5 Dropout voltage (mv) Tempereture (ºC) IO=.A

10 Ripple Rejection ESR Stable area Ripple rejection (db) IO=A IO=5mA IO=5mA. Frequency (khz) Cn=.µF ESR ( ).. 5 Instable area Stable area Output current (ma) COUT=.µF GND PIN Current Output voltage - Temperature GND pin Current (ma) Output Current (ma) IO=mA Tempereture (ºC) 75 Cont PIN Input current Cont PIN Input Current (µa) Cont PIN Input Voltage (ma) VIN=.7V Current limit Output Current (A)

11 Characteristics (Vo=.8V) (Except where noted otherwise VIN=VO+.5V, VCont=.8V, Cin=.µF, CO=.µF, CCn=.µF, Ta=5 C) Output - Input voltage No Load input current IO=5A IO=A IO=75mA Input current (ma) RL= Load regulation Line regulation 3 3 IO=mA Load regulation (mv) Line regulation (mv) Output current (A) Output voltage - Temperature IO=mA Tempereture (ºC) 75 Dropout voltage Dropout voltage (mv) VIN=.7V Output current (ma)

12 Characteristics (Vo=3.3V) (Except where noted otherwise VIN=VO+.5V, VCont=.8V, Cin=.µF, CO=.µF, CCn=.µF, Ta=5 C) Output - Input voltage No Load input current IO=5mA IO=A IO=75mA Input current (ma) RL= Load regulation Line regulation 3 3 IO=mA Load regulation (mv) Line regulation (mv) Output current (A) Dropout voltage 3 VIN=3.V Dropout voltage (mv) Output current (ma) 5

13 Characteristics (Vo=5.V) (Except where noted otherwise VIN=VO+.5V, VCont=.8V, Cin=.µF, CO=.µF, CCn=.µF, Ta=5 C) Output - Input voltage No Load input current 6 6 RL= IO=5mA IO=A IO=75mA Input current (ma) Load regulation Line regulation 3 3 IO=mA Load regulation (mv) Line regulation (mv) Output current (A) Dropout voltage Dropout voltage (mv) VIN=4.8V Output current (ma)