1-1-2 Switching Mode Regulator ICs
SI-8000HFE Series Full-Mold, Separate Excitation Step-down Switching Mode Regulator ICs
■Features
• Compact full-mold package (equivalent to TO220) • Output current: 5.5 A • High efficiency: 83% typ. (at Vo = 5 V) • Requires only 4 discrete components • Built-in reference oscillator (150 kHz) • Built-in drooping-type-overcurrent and thermal protection circuits • Built-in soft start circuit (Output ON/OFF available)
■Lineup
Part Number VO (V) IO (A) SI-8008HFE Variable (0.8 to 15) 5.5 SI-8050HFE 5
■Absolute Maximum Ratings
Parameter DC Input Voltage Symbol VIN PD1-1 Power Dissipation PD1-2 PD2-1 PD2-2 Junction Temperature* Storage Temperature Thermal Resistance (Junction to Case) Thermal Resistance (Junction to Ambient Air) Tj Tstg Ratings 43 25 (with infinite heatsink) 20 (with infinite heatsink) 2.15 (without heat sink, standalone operation) 1.72 (without heatsink, standalone operation) +150 –40 to +150 5 58 °C °C °C/W °C/W W Unit V Limited by thermal protection, Tjmax=150°C Tjmax=125°C Limited by thermal protection, Tjmax=150°C Tjmax=125°C Conditions
■Applications
• Onboard local power supplies • OA equipment
θ j-c θ j-a
*: This product has built-in thermal protection circuits that may operate when the junction temperature rises above 130°C. The recommended design for the junction temperature during operation is below 125°C.
■Recommended Operating Conditions
Ratings Parameter Input Voltage Range Output Voltage Range Output Current Range Operating Junction Temperature Range Operating Temperature Range Symbol VIN VO IO Tjop Top SI-8008HFE SI-8050HFE Unit (Ta=25°C)
Vo+3*1 to 40 0.8 to 24 0 to 5.5 –30 to +125 –30 to +85
8 to 40 5.0
V V A
°C °C
*1: The minimum value of an input voltage range is the higher of 4.5 V or VO + 3 V.
■Electrical Characteristics
Ratings Parameter Symbol Ratings
(Ta=25°C)
SI-8008HFE (at Vo = 5 V) max. min. typ. 0.784 0.800 VIN=15V, Io=1A 0.816
Output Voltage (Reference Voltage) Temperature Coefficient of Output Voltage (Temperature Coefficient of Reference Voltage) Efficiency Oscillation Frequency Line Regulation Load Regulation Overcurrent Protection Starting Current Low Level Voltage ON/OFF Pin* Low Voltage
Vo (VADJ)
Conditions
min. 4.90
SI-8050HFE typ. 5.00
Unit
max. 5.10 V
∆Vo/∆T (∆VADJ/∆T)
Conditions
VIN=15V, Io=1A ±0.5
mV/°C
η
Conditions
±0.1 VIN=15V, Io=1A, Tc=0 to 100°C 83 VIN=15V, Io=3A 150 VIN=15V, Io=3A 60 VIN=10 to 30V, Io=3A 20 VIN=15V, Io=0.2 to 3A
5.6
VIN=15V, Io=1A, Tc=0 to 100°C 83 VIN=15V, Io=3A 150 VIN=15V, Io=3A 60 VIN=10 to 30V, Io=3A 20 VIN=15V, Io=0.2 to 3A
5.6
% kHz
fo
Conditions
∆VOLINE
Conditions
80
50
80 50
mV mV A
∆VOLOAD
Conditions
IS
Conditions
VIN=15V 10 VSSL=0V 6 VIN=15V, Io=0A 200 VIN=15V, VSS=0V 400 0.5 30
VIN=15V 10 VSSL=0V 6 VIN=15V, Io=0A 200 VIN=15V, VSS=0V 400 0.5 30
VSSL Outflow Current at ISSL
Conditions
V µA mA µA
Iq
Quiescent Circuit Current Conditions
Iq(OFF)
Conditions
*: Pin 5 is the SS pin. Soft start at power on can be performed with a capacitor connected to this pin. The output can also be turned ON/OFF with this pin. The output is stopped by setting the voltage of this pin to VSSL or lower. SS-pin voltage can be changed with an open-collector drive circuit of a transistor. When using both the soft-start and ON/OFF functions together, the discharge current from C3 flows into the ON/OFF control transistor. Therefore, limit the current securely to protect the transistor if C3 capacitance is large. The SS pin is pulled up to the power supply in the IC, so applying the external voltage is prohibited. If the pin is not used, leave it open.
SI-8000HFE
SI-8000HFE
SI-8000HFE
5 SS
5 SS C3
5 SS C3
VOUT. ON/OFF
Soft start
Soft start +VOUT. ON/OFF
68
ICs
SI-8000HFE Series
■External Dimensions (TO220F-5)
(Unit : mm)
0.5
10.0±0.2
4.2 ±0.2 2.8 4.0±0.2 7.9±0.2
φ 3.2±0.2
±0.2
16.9±0.3
(17.9)
2.6±0.1
(2.0)
0.95±0.15 0.85 –0.1 P1.7±0.7×4=6.8±0.7 (4.6)
+0.2
0.45 –0.1 3.9
+0.2
4.6±0.6
Pin Assignment q VIN w SW e GND r ADJ (VOS for SI-8050HFE) t SS Plastic Mold Package Type Flammability: UL94V-0 Product Mass: Approx. 2.3g
±0.7
(4.3) 8.2±0.7
12345
■Block Diagram
SI-8008HFE 1 IN PReg. 5 ON/OFF ON/OFF Soft Start Reset OSC
+ –
SI-8050HFE
SW Overcurrent Protection Latch & Drive
2
1
IN PReg.
Overcurrent Protection
SW
2
5 ON/OFF
ON/OFF Soft Start
Reset OSC
Latch & Drive
Comp.
– + +
Thermal ADJ Protection 4
+ –
Comp. Error Amp.
– + +
Thermal Protection
Vos 4
Error Amp.
Reference Voltage GND 3
GND 3
Reference Voltage
■Typical Connection Diagram
VIN C1 +
1 C4
IN PReg.
SW
2 Di
L
VOUT + C2
VIN C1 +
1 C4
IN PReg.
SW
2 Di
L
VOUT + C2
5 ON/OFF R1 SI-8008HFE C3
+ –
5 ON/OFF
SI-8050HFE C3 ADJ 4
+ –
ADJ 4
– + +
+ –
R2
GND 3
GND 3
C1 C2 C3 C4 L1 Di
: 1500µF : 1000µF :1µF (Only when using soft-start function) :4.7µF (RPER11H475K5 (Murata Manufacturing) recommended) :100µH : FMB-G16L (Sanken)
ICs
69
很抱歉,暂时无法提供与“SI-8000HFE”相匹配的价格&库存,您可以联系我们找货
免费人工找货