Purchase SG1825C, In-stock SG1825C From SeekIC.
Part Number: SG1825C
Description: The SG1825C is a high-performance pulse width modulator optimized for high frequency current-mode powe...
- Table of contents:
SG1825C
-
Suppliers
DataSheet
General Description
SG1825C General Description
The SG1825C is a high-performance pulse width modulator optimized for high frequency current-mode power supplies. Included in the controller are a precision voltage reference, micropower start-up circuitry, softstart, high-frequency oscillator, wideband error amplifier, fast currentlimit comparator, full double-pulse suppression logic, and dual totempole output drivers. Innovative circuit design and an advanced linear Schottky process result in very short propagation delays through the current limit comparator, logic, and output drivers. This device can be used to implement either currentmode or voltage-mode switching power supplies. It also is useful as a series-resonant controller to frequencies beyond 1MHz. The SG1825C is specified for operation over the full military ambient temperature range of -55 to 125. The SG2825C is characterized for the industrial range of -25 to 85, and the SG3825C is selected for the commercial range of 0 to 70.
SG1825C Maximum Ratings
Input Voltage (VIN and VC) .................................................... 30V
Analog Inputs:
Error Amplifier and Ramp ......................................... -0.3V to 7.0V
Softstart and ILIM/S.D. ............................................ -0.3V to 6.0V
Digital Input (Clock) .................................................. 1.5V to 6.0V
Driver Outputs ...................................................-0.3V to VC+1.5V
Source / Sink Output Current (each output):
Continuous ........................................................................... 0.5A
Pulse, 500ns ......................................................................... 2.0A
Softstart Sink Current ......................................................... 20mA
Clock Output Current ............................................................ 5mA
Error Amplifier Output Current .............................................. 5mA
Oscillator Charging Current .................................................. 5mA
Operating Junction Temperature:
Hermetic (J, L Package) ...................................................... 150
Plastic (DW, N, Q Packages) ............................................... 150
Storage Temperature Range....................................... to 150
Lead Temperature (soldering, 10 seconds) ....................... 300
Note 1. Exceeding these ratings could cause damage to the device.
Analog Inputs:
Error Amplifier and Ramp ......................................... -0.3V to 7.0V
Softstart and ILIM/S.D. ............................................ -0.3V to 6.0V
Digital Input (Clock) .................................................. 1.5V to 6.0V
Driver Outputs ...................................................-0.3V to VC+1.5V
Source / Sink Output Current (each output):
Continuous ........................................................................... 0.5A
Pulse, 500ns ......................................................................... 2.0A
Softstart Sink Current ......................................................... 20mA
Clock Output Current ............................................................ 5mA
Error Amplifier Output Current .............................................. 5mA
Oscillator Charging Current .................................................. 5mA
Operating Junction Temperature:
Hermetic (J, L Package) ...................................................... 150
Plastic (DW, N, Q Packages) ............................................... 150
Storage Temperature Range....................................... to 150
Lead Temperature (soldering, 10 seconds) ....................... 300
Note 1. Exceeding these ratings could cause damage to the device.
SG1825C Features
· IMPROVED REFERENCE INITIAL TOLERANCE (±1% max.)
· IMPROVED OSCILLATOR INITIAL ACCURACY (±3% typ.)
· IMPROVED STARTUP CURRENT (500µA typ.)
· PROP DELAY TO OUTPUTS (50ns typ.)
· 10V TO 30V OPERATION
· 5.1V REFERENCE TRIMMED TO ±1%
· 2MHZ OSCILLATOR CAPABILITY
· 1.5A PEAK TOTEM-POLE DRIVERS
· U.V. LOCKOUT WITH HYSTERESIS
· NO OUTPUT DRIVER "FLOAT"
· PROGRAMMABLE SOFTSTART
· DOUBLE-PULSE SUPPRESSION LOGIC
· WIDEBAND LOW-IMPEDANCE ERROR AMPLIFIER
· CURRENT-MODE OR VOLTAGE-MODE CONTROL
· WIDE CHOICE OF HIGH-FREQUENCY PACKAGES
· IMPROVED OSCILLATOR INITIAL ACCURACY (±3% typ.)
· IMPROVED STARTUP CURRENT (500µA typ.)
· PROP DELAY TO OUTPUTS (50ns typ.)
· 10V TO 30V OPERATION
· 5.1V REFERENCE TRIMMED TO ±1%
· 2MHZ OSCILLATOR CAPABILITY
· 1.5A PEAK TOTEM-POLE DRIVERS
· U.V. LOCKOUT WITH HYSTERESIS
· NO OUTPUT DRIVER "FLOAT"
· PROGRAMMABLE SOFTSTART
· DOUBLE-PULSE SUPPRESSION LOGIC
· WIDEBAND LOW-IMPEDANCE ERROR AMPLIFIER
· CURRENT-MODE OR VOLTAGE-MODE CONTROL
· WIDE CHOICE OF HIGH-FREQUENCY PACKAGES
SG1825C Typical Application
1. HIGH-SPEED LAYOUT AND BYPASSING
2. MICROPOWER STARTUP
3. SOFTSTART FAST RESET
4. OSCILLATOR SYCHRONIZATION
5. OSCILLATOR FUNCTIONAL DIAGRAM
6. VOLTAGE AMPLIFIER CONNECTIONS
7. DRIVING SHIELDED CABLE
2. MICROPOWER STARTUP
3. SOFTSTART FAST RESET
4. OSCILLATOR SYCHRONIZATION
5. OSCILLATOR FUNCTIONAL DIAGRAM
6. VOLTAGE AMPLIFIER CONNECTIONS
7. DRIVING SHIELDED CABLE
SG1825C Connection Diagram
SG1825C
PDF/DataSheet Download
- Datasheet: SG1825C
- File Size: 189035 KB
- Manufacturer: MICROSEMI [Microsemi Corporation]
- Click here to Download
- ·SG1000GXH26
- Toshiba
- INVERTER APPLICATION
- 211366 KB
- ·SG105
- KODENSHI [KODENSHI KOREA CORP.]
- PHOTOINTERRUPTERS
- 86479 KB
- ·SG105F
- KODENSHI [KODENSHI KOREA CORP.]
- PHOTOINTERRUPTERS
- 90931 KB
- ·SG107F3
- ETC [ETC]
- Reflective sensor combines a GaAs IRED with a high-sensitivity phototransistor
- 132508 KB
- ·SG109
- MICROSEMI [Microsemi Corporation]
- 5 -VOLT FIXED VOLTAGE REGULATORS
- 51727 KB
- ·SG109IG
- MICROSEMI [Microsemi Corporation]
- 5 -VOLT FIXED VOLTAGE REGULATORS
- 51727 KB
- ·SG109IG/883B
- MICROSEMI [Microsemi Corporation]
- 5 -VOLT FIXED VOLTAGE REGULATORS
- 51727 KB
- ·SG109K
- MICROSEMI [Microsemi Corporation]
- 5 -VOLT FIXED VOLTAGE REGULATORS
- 51727 KB
SG1825C Relative Products
SG1731J/883B
The SG1731J/883B is designed as one kind of DC motor pulse width modulator device that provides a bi-directional pulse train output in response to the magnitude and polarity of an analog error signal input. And this device is useful as the control element in...
SG1731J
The SG1731J is designed as one kind of DC motor pulse width modulator device that provides a bi-directional pulse train output in response to the magnitude and polarity of an analog error signal input. And this device is useful as the control element in moto...
SG1731
The SG1731 is a pulse width modulator circuit designed specifically for DC motor control. It provides a bi-directional pulse train output in response to the magnitude and polarity of an analog error signal input. The SG1731 is useful as the control element i...
SG16AA60
SG16AA40
SG16AA20
SG16AA20 is an isolated molded thyristor which is suitable fora wide range of industrial and home electronics uses. SG16AA uses highly relible glass passivation.
Hotspot Suppliers Product
XC56L307VL160
Price: 6-6.8 USD
24-Bit, Digital Signal Processor, BGA, –0.1 to 2.0 V, 160.0 ns, echo-cancellation applications
LTC4259ACGW-1
Price: 2.25-2.9 USD
Quad IEEE 802.3af, Power over Ethernet Controller, 36SSOP, -48V, ±1mA
G86-731-A2
Price: 47.3-48.5 USD
G86-731-A2, BGA, NVIDIA Corporation, Integrated Circuit, graphic processor chipset
MBM2732A-35
Price: 0.1-10 USD
high speed, 32768 bit, static N-channel, MOS erasable, electrically reprogrammable, read only memo...
EKMM401VSN390MN20S
Price: 0.01-100 USD
aluminum electrolytic capacitor, KMM series , 39μF, 0.32 Arms
HCPL-070A
Price: 0.8-2 USD
low power consumption, high gain, single and dual channel optocoupler, SOP, 0.5 V
MC7805BD2TR4G
Price: 1-1 USD
1.0 A, Positive Voltage Regulator, Pb-free, TO-263
7MBI50N-120
Price: 1-2 USD
Fuji Electric - IGBT 7MBI50N-120
DCP010505DBP
Price: 4.61-4.76 USD
Miniature, 1W Isolated unregulated dc/dc converter, DIP-14, Thermal Protection
AN5829S
Price: 0.3-0.5 USD
SOP, multiplex sound demodulation IC, 6.0 V, 25 mA
STK795-480
Price: 5-50 USD
Chopper Type, Voltage Regulator, DIP, 5V chopper IC, Sanyo Semicon Device
K6T0808C1D-TF70
Price: 0.62-0.83 USD
CMOS SRAM, SOP, -0.5 to 7.0V, 1.0 W, TFT Process Technology, Three state output, TTL Compatible
