Description
WE ARE RICH ELECTRONICS
WE PURCHASE AND RECYCLE
SURPLUS ELECTRONIC
COMPONENTS AND EQUIPMENT!
For sale here we have the above…
1 Piece
The MIC38C4x are fixed frequency, high performance, current-mode PWM controllers. Micrel’s BiCMOS devices are
pin compatible with 384x bipolar devices but feature several
improvements.
Undervoltage lockout circuitry allows the ’42 and ’44 versions
to start up at 14.5V and operate down to 9V, and the ’43 and
’45 versions start at 8.4V with operation down to 7.6V. All
versions operate up to 20V.
When compared to bipolar 384x devices operating from a
15V supply, start-up current has been reduced to 50µA typical
and operating current has been reduced to 4.0 mA typical.
Decreased output rise and fall times drive larger MOSFETs,
and rail-to-rail output capability increases efficiency, especially at lower supply voltages. The MIC38C4x also features
a trimmed oscillator discharge current and bandgap reference.
The MIC38C4x denotes 8-pin plastic DIP, SOIC, and MSOP
packages. MIC384Cx-1 denotes 14-pin plastic DIP and
SOIC packages. 8-pin devices feature small size, while 14-
pin devices separate the analog and power connections for
improved performance and power dissipation.
• Fast 40ns output rise and 30ns output fall times
• –40°C to +85°C temperature range
meets UC284x specifications
• High-performance, low-power BiCMOS Process
• Ultralow start-up current (50µA typical)
• Low operating current (4mA typical)
• CMOS outputs with rail-to-rail swing
• ≥ 500kHz current-mode operation
• Trimmed 5V bandgap reference
• Pin-for-pin compatible with UC3842/3843/3844/3845(A)
• Trimmed oscillator discharge current
• UVLO with hysteresis
• Low cross-conduction currents
• Current-mode, off-line, switched-mode power supplies
• Current-mode, dc-to-dc converters.
• Step-down “buck” regulators
• Step-up “boost” regulators
• Flyback, isolated regulators
• Forward converters
• Synchronous FET converters
Date code 1028
SPECIFICATIONS
- Package / Case: 8-SOIC (0.154, 3.90mm Width)
- Mounting Type: Surface Mount
- Number of Pins: 8
- Supplier Device Package: 8-SOIC
- Operating Temperature: -40°C~85°C TA
- Packaging: Tube
- Moisture Sensitivity Level (MSL): 1 (Unlimited)
- Max Operating Temperature: 85°C
- Min Operating Temperature: -40°C
- Frequency: 500kHz
- Base Part Number: MIC38C45
- Function: Step-Up, Step-Down, Step-Up/Step-Down
- Number of Outputs: 1
- Output Type: Transistor Driver
- Number of Channels: 1
- Max Supply Voltage: 20V
- Min Supply Voltage: 7.6V
- Operating Supply Current: 4mA
- Output Configuration: Positive, Isolation Capable
- Output Current: 500mA
- Voltage – Supply (Vcc/Vdd): 7.6V~20V
- Max Supply Current: 6mA
- Control Features: Frequency Control
- Topology: Buck, Boost, Flyback, Forward Converter
- Frequency – Switching: 500kHz
- Rise Time: 40ns
- Synchronous Rectifier: Yes
- Fall Time (Typ): 30 ns
- Max Duty Cycle: 50 %
- Isolation: Isolated
- Duty Cycle (Max): 50%
- Clock Sync: No
- Output Phases: 1
- Radiation Hardening: No
- RoHS Status: ROHS3 Compliant
- Lead Free: Lead Free
For datasheet search…38C45YM
Or go directly to…
https://www.qdatasheet.com/pdf-view/MIC38C45YMM-Micrel
PLEASE NOTE!
These parts came to us as part of a lot of surplus stock from a large ‘Mispec’ type Co. and have been kept in storage for some time, we have therefore classified them as ‘new other’, they are however pristine, stored with us sealed in original packaging, the photographs are representative of their general condition, being of some of our actual stock, and, as with all our products they come with a full guarantee.
If you have similar items to this, or indeed any electronic components that are surplus to requirements please contact us with details.
