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| qSTA801M/802M STA801M/802M 2-Output Separate Excitation Switching Type sFeatures * * * * * * * * 2 regulators combined 1 package Compact inline package Output current (0.5A x 2 output) Output voltage of Ch2 selectable from 4 levels. Built-in flywheel diode (Schottky barrier diode) Requires only 7 external components (2 outputs) Phase correction and output voltage adjustment performed internally Built-in reference oscillator (125kHz) - Compact choke coil can be used due to high frequency (compared to existing Sanken product) * Built-in overcurrent and thermal protection circuits * Built-in soft start circuit (Output ON/OFF control) sApplications * For BS and CS antenna power supplies * For stabilization of the secondary stage of switching power supplies * Electronic equipment sLineup Part Number Ch1 STA801M STA802M 5 9 Output Voltage (V) Ch2(Select one output) 9.0 / 11.5 / 12.1 / 15.5 9.1 / 11.7 / 12.1 / 15.7 sAbsolute Maximum Ratings Parameter DC Input Voltage Power Dissipation Junction Temperature Storage Temperature Symbol VIN PD1 PD2 Tj Tstg Ratings 43 6.7(With infinite heatsink) 1.6(Without heatsink, stand-alone operation) +125 -40 to +125 Unit V W W C C sRecommended Operating Conditions Parameter DC Input Voltage Range Output Current Range per Channel Operating Temperature Range Symbol min. VIN IO Tjop Ch2 VOmax.+2 0 -20 Ratings max. 40 0.5 +125 V A C Unit 108 qSTA801M/802M sElectrical Characteristics Ratings Parameter Symbol min. Ch1 Output voltage 1 Efficiency * Temperature Coefficient of Output Voltage Line Regulation Load Regulation Ch2 (Select one output) Output voltage 2-2 Output voltage 2-3 Output voltage 2-4 VO2-4 Efficiency* Temperature Coefficient of Output Voltage Line Regulation Load Regulation Common No-load Circuit Current Switching Frequency Overcurrent Protection Starting Current Output voltage 2-1 VO1 Conditions 1 Conditions VO/Ta1 VOLINE1 Conditions VOLOAD1 Conditions VO2-1 Conditions VO2-2 Conditions VO2-3 Conditions VO2-4 Conditions Conditions VO/Ta VOLINE Conditions VOLOAD Conditions ICC f IS1 0.51 14.88 11.62 11.04 8.64 4.80 STA801M typ. 5.00 VIN=20V, IO=0.3A 80 VIN=20V, IO=0.3A 0.5 30 10 9.00 VIN=20V, IO=0.3A 11.50 VIN=20V, IO=0.3A 12.10 VIN=20V, IO=0.3A 15.50 VIN=20V, IO=0.3A 89 VIN=20V, IO=0.3A 2.0 40 30 15 125 0.7 0.51 130 120 VIN=20 to 30V, IO=0.3A VIN=20V, IO=0.1 to 0.4A 16.12 15.08 12.58 11.62 11.96 11.24 90 40 9.36 8.74 VIN=10 to 30V, IO=0.3A VIN=20V, IO=0.1 to 0.4A max. 5.20 min. 8.64 STA802M typ. 9.00 VIN=20V, IO=0.3A 86 VIN=20V, IO=0.3A 1.0 35 20 9.10 VIN=20V, IO=0.3A 11.70 VIN=20V, IO=0.3A 12.10 VIN=20V, IO=0.3A 15.70 VIN=20V, IO=0.3A 89 VIN=20V, IO=0.3A 2.0 40 30 15 125 0.7 130 120 VIN=20 to 30V, IO=0.3A 16.32 12.58 12.16 110 80 9.46 VIN=14 to 30V, IO=0.3A max. 9.36 (Ta=25C) Unit V % mV/C mV mV V V V V % mV/C mV mV mA kHZ A VIN=20V, IO=0.1 to 0.4A VIN=20V, IO=0.1 to 0.4A *Efficiency indicates the value when only one channel is active. The value can be calculated as shown below. 7.5mA is deducted for the no-load Icc circuit current of at unused output. 2 VO*IO = x 100(%) VIN*(IIN-0.0075) 109 qSTA801M/802M sOutline Drawing (unit:mm) 40.2 a 3.150.5 (1) 90.2 b a. Part Number b. Lot Number 1.20.1 2-(R1) q VO2 Cont w e r t y u i o !0 VOS1 SS1 SWOUT1 GND VIN SWOUT2 SS2 VOS2-2 VOS2-1 .65) R-END 1.15 +0.2 -0.1 0.55+0.2 -0.1 (3.1) 2-(R0 0.55 -0.1 4.30.7 +0.2 9xP2.540.5=22.861 (Tip dimension) 25.250.3 C1.50.5 (Tip dimension) 1 2 3 4 5 6 7 8 9 10 Plastic Mold Package Type Flammability: UL94V-0 Weight: Approx. 2.5g sBlock Diagram VIN 6 P.Reg. OCP 4 SW1 SS1 3 + PWM - PWM Logic Drive 2 VOS1 + Amp. - PWM OSC Vref f/4 Reset TSD 4 SW2 OCP SS2 8 + PWM - PWM Logic 10 VOS2 -1 Drive 9 VOS2 -2 + Amp. - VO2 Cont 1 GND 5 Vref 110 qSTA801M/802M sStandard External Circuit STA800M VIN + 6 C1 220F 3 VIN SWOUT1 4 L1 5V:100 H 9V:150 H VO1 C2 + 330F SS1 Ch 1 VOS1 2 See "Output selection method" for details about connecting VOS2-1 and VOS2-2 of Channel 2. Open:ON Low :OFF + C4 0.47 F Open:ON Low :OFF GND 8 SS2 C5 0.47 F + VO2 Cont 1 GND SWOUT2 Ch 2 VOS2 -2 7 10 Or L2 150 H VO2 + C3 330F 5 VOS2 -1 9 sTa-PD Characteristics 7 6 With Infinite Heatsink Power Dissipation PD (W) 5 4 3 2 1 0 -30 Without Heatsink 0 25 50 75 100 125 Ambient Temperature Ta (C) 111 qSTA801M/802M sSelecting External Components 1. Inductors L1 and L2 (1) Suitable for switching regulators Do not use a coil as a noise filter because it generates excess heat. (2) Appropriate inductance A low inductance may cause abnormal oscillation, or cause the overcurrent protection circuit to malfunction in the rated current range. (3) Satisfying the rated current Exceeding the rated current may generate an extremely high current to flow due to magnetic saturation. 2. Capacitors C1, C2, and C3 (1) Satisfy the breakdown voltage and allowable ripple current Exceeding the ratings of these capacitors or using them without derating may shorten their service lives and also cause abnormal oscillation. (2) Low impedance (C2, and C3) A low-impedance model is recommended for C2 and C3 to reduce the ripple voltage and stabilize switching. For stable operation throughout the input voltage range, however, the DC equivalent series resistance (ESR) of C2 and C3 should be 0.1 ohm or less. 3. Capacitors C4 and C5 (1) C4 and C5 are soft-start capacitors. sSelecting Ch2 Output Voltage When the VO2Cont terminal voltage is set to 0.5V or less, the output voltage changes to the values shown below. To switch the potential at the VO2Cont terminal, drive the open collector of the transistor. No external voltage can be applied to the terminal. Leave the terminal open when not in use because the terminal is already pulled up in the IC. When using terminal no. 9, short it to terminal no. 10. ( ): STA802M 7 STA800M 1 VO2 Cont 10 9 + 12.1V (12.1V) VO2 9V (9.1V) 7 STA800M 10 1 VO2 Cont + VO2 11.5V (11.7V) 15.5V (15.7V) VO2 output voltage VO2Cont terminal (1 pin) VO2 sensing terminal 9pin 10pin STA801M OPEN 9V 11.5V Low 12.1V 15.5V STA802M OPEN 9.1V 11.7V Low 12.1V 15.7V Low : 0.5V or less sSoft Start ON/OFF Circuit Terminal nos. 3 and 8 are soft start terminals. Connect a capacitor to the terminal to permit a soft start. Output can be turned on and off by using the soft start terminals. Set the soft start terminal voltage to VSSL (0.15V) or less to stop the output. To switch the potential at the soft start terminals, drive the open collector of the transistor. Since the discharge currents from C4 and C5 flow to the ON/OFF control transistor, limit the current for protection. The SS terminal is pulled up to the power supply in the IC and no external voltage can be applied to the terminal. STA800M 3 or 8 S.S. + C4, C5 Soft start STA800M 3 or 8 S.S. + C4, C5 Soft start +VO ON/OFF 112 qSTA801M/802M sTypical Characteristics (Ta=25C) STA801M Rise Characteristics(Ch1:5V) 6 Load Regulation(Ch1:5V) 5.1 Efficiency Characteristics(Ch1:5V) 100 Output Voltage VO (V) IO=0 A 0.5A Output Voltage VO (V) Efficiency (%) 5.0 20V 10V 7V 4.9 0.3A 60 2 40 0 0 5 10 15 20 0 0 0.1 0.2 0.3 0.4 0.5 0 0 40V 30 V 20 VIN =7 V 4 V VIN=40V 80 0.1 0.2 0.3 0.4 0.5 Input Voltage VIN (V) Output Current IO (A) Output Current IO (A) PD Characteristics(Ch1:5V) 0.8 Overcurrent Protection Characteristics(Ch1:5V) 6 Rise Characteristics(Ch2:9V) 12 Power Dissipation PD (W) Output Voltage VO (V) Output Voltage VO (V) 0.6 20V 4 V =7 VIN 40V 8 0A IO= 4 0 0 5 0.4 VIN V =40 0V 3 20V 7V 0.3A 2 0.2 0 0 0.1 0.2 0.3 0.4 0.5 0 0.5 10 A 0 0.2 0.4 0.6 0.8 1.0 15 20 Output Current IO (A) Output Current IO (A) Input Voltage VIN (V) Efficiency Characteristics(Ch2:9V) 100 PD Characteristics(Ch2:9V) 0.8 Temperature Characteristics(Ch1:5V, Ch2:9V) Efficiency (%) Oscillation Frequency f (kHz) 160 (VIN=20V, IO=0.3A) ch1 ch2 5.6 9.6 80 Efficiency (%) 40 30V V 2 VI 0V 0.6 f 5.2 9.2 9V VO ch2 120 60 0.4 0 =4 VIN 30V V 20 11 V V 100 VO ch1 5V ch2 9V 5.0 9.0 40 0.2 80 ch1 5V 4.8 8.8 0 0 0.1 0.2 0.3 0.4 0.5 0 0 0.1 0.2 0.3 0.4 0.5 0 -40 -20 0 20 40 60 80 100 0 120 0 Output Current IO (A) Output Current IO (A) Ambient Temperature Ta (C) STA802M Load Regulation(Ch1:9V) 9.1 PD Characteristics(Ch1:9V) 0.9 0.8 PD Characteristics(Ch2:15.7V) 0.9 0.8 Power Dissipation PD (W) Output Voltage VO (V) VIN=40V 9.0 20V 11V 0.7 0.6 0.5 0.4 V 40 0.3 VIN= V 30 0.2 20V Power Dissipation PD (W) 30V 0.7 0.6 0.5 0.4 0V =4 IN V 0.3 V 30 V 20 0.2 7V 17. 0.1 8.9 0.1 0 0 0.1 0.2 0.3 0.4 0.5 11V 0 0 0.1 0.2 0.3 0.4 0.5 0 0 0.1 0.2 0.3 0.4 0.5 Output Current IO (A) Output Current IO (A) Output Current IO (A) 113 Output Voltage VO (V) N= Power Dissipation PD (W) 11 V 140 5.4 9.4 |
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