Manufacturer Part #
UC3845BN
UC3845 Series 15 V 17 A High Performance Current Mode Controller - PDIP-8
| | |||||||||||
| | |||||||||||
| Mfr. Name: | STMicroelectronics | ||||||||||
| Standard Pkg: | Product Variant Information section Available Packaging
Package Qty:50 per Tube Package Style:PDIP-8 Mounting Method:Through Hole | ||||||||||
| Date Code: | |||||||||||
Product Specification Section
STMicroelectronics UC3845BN - Product Specification
Shipping Information:
Item cannot ship to certain countries. See List
Item cannot ship to following countries:
ECCN:
EAR99
PCN Information:
N/A
File
Date
Part Status:
Active
Active
STMicroelectronics UC3845BN - Technical Attributes
Attributes Table
| Supply Current-Max: | 17mA |
| Supply Voltage: | 30V |
| Frequency-Max: | 500kHz |
| Input Voltage: | 2.58V |
| Topology: | Boost/Flyback |
| Rated Power: | 1.25W |
| Duty Cycle-Min: | 0% |
| Duty Cycle-Max: | 50% |
| Operating Temp Range: | -40°C to +150°C |
| Storage Temperature Range: | -65°C to +150°C |
| Output Current: | 1mA |
| Thermal Resistance: | 100°C/W |
| Package Style: | PDIP-8 |
| Mounting Method: | Through Hole |
Features & Applications
The UC3845BN is of control ICs provides the necessary features to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include a trimmed oscillator for precise DUTY CYCLE CONTROL under voltage lockout featuring start-up current less than 0.5 A.
A precision reference trimmed for accuracy at the error amp input, logic to insure latched operation, a PWM comparator which also provides current limit control, and a totem pole output stage designed to source or sink high peak current. The output stage, suitable for driving N-Channel MOSFETs, is low in the offstate.
Features:
- Trimmed Oscillator for Precise frequency Control
- Oscillator Frequency Guaranteed at 250 Hz
- Current Mode Operation to 500 kHz
- Automatic Feed Forward Copensation
- Latching PWM for Cycle-by-cycle Current Limiting
- Internally Trimmed Reference with Undervoltage lockout
- High Current totem pole output Undervoltage Lockout With Hystersis
- Low Start-up and Operating Current
Pricing Section
Global Stock:
0
USA:
0
On Order:
0
Factory Lead Time:
14 Weeks
Quantity
Web Price
1
$0.46
100
$0.44
250
$0.425
1,000
$0.405
2,500+
$0.38
Product Variant Information section
Available Packaging
- TubeSelected Variant Qty: 4,000+ / Web Price: $0.46 / Stock: 0 Qty: 1+$0.46 Stock: 0
- Tube Qty: 50+ / Web Price: $0.37 / Stock: 9,000 Qty: 50+$0.37 Stock: 9,000
- Tube Qty: 2,000+ / Web Price: $0.46 / Stock: 0 Qty: 1+$0.46 Stock: 0
- Tube Qty: 1+ / Web Price: $0.46 / Stock: 2,950 Qty: 1+$0.46 Stock: 2,950
Package Qty:
50 per Tube
Package Style:
PDIP-8
Mounting Method:
Through Hole
