STA801

STA801M SANKEN | Alldatasheet

Document overview

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• PDF pages: 6

Technical content

• 2 regulators combined 1 package
• Compact inline package
• Output current (0.5A × 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) n Applications
• For BS and CS antenna power supplies
• For stabilization of the secondary stage of switching power supplies
• Electronic equipment n Lineup 2-Output Separate Excitation Switching Type Unit V W W Symbol VIN PD1 PD2 Tj Tstg STA801M/802M n Recommended Operating Conditions n Absolute Maximum Ratings l STA801M/802M Unit V A Parameter DC Input Voltage Power Dissipation Junction Temperature Storage Temperature Part Number STA801M STA802M Parameter DC Input Voltage Range Output Current Range per Channel Operating Temperature Range Output Voltage (V) Ch1 Ch2(Select one output) Ratings 6.7(With infinite heatsink) 1.6(Without heatsink, stand-alone operation) +125 –40 to +125 Symbol VIN IO Tjop Ratings min. max. Ch2 VOmax. +2 40 0 0.5 –20 +125

n Electrical Characteristics (Ta=25°C) *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 circuit current of Icc at unused output.2 η= VO •IO Ch1 Ch2 (Select one output) VO 2-4 Common Unit V mV/°C mV mV V V V V mV/°C mV mV mA kHZ A Symbol VO 1 Conditions Conditions ΔVO /ΔTa1 ΔVOLINE1 Conditions ΔVOLOAD1 Conditions VO 2-1 Conditions VO 2-2 Conditions VO 2-3 Conditions VO 2-4 Conditions η Conditions ΔVO /ΔTa ΔVOLINE Conditions ΔVOLOAD Conditions ICC f IS1 Ratings STA801M STA802M VIN=20V, IO =0.3A V IN=20V, IO =0.3A 80 86 VIN=20V, IO =0.3A V IN=20V, IO =0.3A ±0.5 ±1.0 30 90 35 110 VIN=10 to 30V, IO =0.3A V IN=14 to 30V, IO =0.3A 10 40 20 80 VIN=20V, IO =0.1 to 0.4A V IN=20V, IO =0.1 to 0.4A VIN=20V, IO =0.3A V IN=20V, IO =0.3A VIN=20V, IO =0.3A V IN=20V, IO =0.3A VIN=20V, IO =0.3A V IN=20V, IO =0.3A VIN=20V, IO =0.3A V IN=20V, IO =0.3A 89 89 VIN=20V, IO =0.3A V IN=20V, IO =0.3A ±2.0 ±2.0 40 130 40 130 VIN=20 to 30V, IO =0.3A V IN=20 to 30V, IO =0.3A 30 120 30 120 VIN=20V, IO =0.1 to 0.4A V IN=20V, IO =0.1 to 0.4A 15 15 125 125 0.51 0.7 0.51 0.7 Parameter Output voltage 1 Efficiency * Temperature Coefficient of Output Voltage Line Regulation Load Regulation Output voltage 2-1 Output voltage 2-2 Output voltage 2-3 Output voltage 2-4 Efficiency* Temperature Coefficient of Output Voltage Line Regulation Load Regulation No-load Circuit Current Switching Frequency Overcurrent Protection Starting Current

Flammability: UL94V-0 Weight: Approx. 2.5g a. Part Number b. Lot Number q V O2 C ont w VOS1 e SS1 r SW OUT1 t GND y VIN u SW OUT2 i SS2 o VOS2 –2 !0 VOS2 –1 n Block Diagram SW1VIN SS 1 SS 2 VO2 Cont GND VOS12 Drive PWM Logic PWM Vref P.Reg. SW2 VOS2 –1 VOS2 –29 Drive PWM Logic PWM Vref OCP TSD OCP PWM OSC f/4 Reset Amp. Amp. 1.15 25.25–0.3 C1.5–0.5 123456789 1 0 +0.2 –0.1 0.55+0.2 9–0.2 (1) 3.15–0.5(3.1) 4–0.2 1.2–0.1 2–(R1) 4.3–0.7 R-END 2–(R0.65) 0.55+0.2 –0.1 a b (Tip dimension) (Tip dimension) l STA801M/802M (unit:mm)

n Standard External Circuit 4SW OUT1VINVIN VO2 Cont GNDGND SS 1 SS 2 VOS1 VOS2 VOS2 SW OUT2 Ch 1 Ch 2 VO1 VO2 O r 150 Hµ 5V:100 H 9V:150 H Open:ON Low :OFF µ µ 330 F C 3 C 2 µ 330 Fµ C 1 220 F C 4 0.47 F C 5 0.47 F µ µ µ +Open:ON Low :OFF

0 Power Dissipation PD (W)

Ambient Temperature Ta (°C) 0–30 25 50 75 100 125 Without Heatsink With Infinite Heatsink See "Output selection method" for details about connecting VOS2 -1 and VOS2 -2 of Channel 2. l STA801M/802M

n Selecting 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. n Selecting Ch2 Output Voltage When the VO2 C ont terminal voltage is set to 0.5V or less, the output voltage changes to the values shown below. To switch the potential at the VO2 C ont 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 n Soft 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. 9pin 10pin STA801M STA802M OPEN Low OPEN Low 9V 12.1V 9.1V 12.1V 11.5V 15.5V 11.7V 15.7V STA800M VO2 Cont1

7 VO2

9V (9.1V) 12.1V (12.1V) STA800M VO2 Cont1 11.5V (11.7V) 15.5V (15.7V) STA800M S.S. C 4, C5 3 or 8 STA800M Soft start Soft start +V O ON/OFF S.S. C 4, C5 3 or 8 VO2 Cont terminal (1 pin) VO2 sensing terminal VO2 output voltage Low : 0.5V or less l STA801M/802M

PD Characteristics(Ch1:5V) Overcurrent Protection Characteristics(Ch1:5V) Rise Characteristics(Ch2:9V) Efficiency Characteristics(Ch2:9V) P D Characteristics(Ch2:9V) Temperature Characteristics(Ch1:5V, Ch2:9V) STA801M Load Regulation(Ch1:9V) P D Characteristics(Ch1:9V) P D Characteristics(Ch2:15.7V) 00 5 10 15 20 Input Voltage VIN (V) Output Voltage VO (V) 0.3A IO=0A 0.5A 5.1 5.0 4.9 Output Current IO (A) Output Voltage VO (V) VIN=40V 20V 10V 100 Output Current IO (A) Efficiency (%) VIN=7V 20V 30V 40V η 0.8 0.6 0.4 0.2 Output Current IO (A) Power Dissipation PD (W) 30V VIN=40V 20V Output Current IO (A) Output Voltage VO (V) VIN =7V 20V 40V 100 Output Current IO (A) Efficiency (%) 20V 30Vη VIN=11V 40V 0.8 0.6 0.4 0.2 Output Current IO (A) Power Dissipation PD (W) 30V 11V VIN=40V 20V 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 Output Current IO (A) Power Dissipation PD (W) 20V 30VVIN=40V 17.7V 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 Output Current IO (A) Power Dissipation PD (W) 30V 20V 11V VIN=40V 9.1 9.0 8.9 Output Current IO (A) Output Voltage VO (V) VIN=40V 30V 20V 11V 160 140 120 100 5.6 5.4 5.2 5.0 4.8 9.6 9.4 9.2 9.0 8.8 0–40 –20 0 20 40 60 80 100 120 f Ambient Temperature Ta (°C) Oscillation Frequency f (kHz) Output Voltage VO (V) (VIN=20V, IO =0.3A)ch1 ch2 Efficiency (%) η VO ch2 9V VO ch1 5V η ch2 9V η ch1 5V STA802M Rise Characteristics(Ch1:5V) Load Regulation(Ch1:5V) Efficiency Characteristics(Ch1:5V) (Ta=25°C) l STA801M/802M 00 5 10 15 20 Input Voltage VIN (V) Output Voltage VO (V) IO=0A 0.3A 0.5A