RYC9901 Tyco Electronics, RYC9901 Datasheet - Page 2

• Manufacturer Part Number: RYC9901
• Description: IC, LED DRIVER, BOOST, SOT-23-6
• Manufacturer: Tyco Electronics

Specifications of RYC9901

• No. Of Outputs: 1
• Output Current: 1.9A
• Output Voltage: 25V
• Input Voltage: 1.9V To 5.5V
• Dimming Control Type: PWM / Analog
• Operating Temperature Range: -40°C To +85°C
• Topology: Boost
• Output Power: 700 mWatts
• Switching Frequency: 85 KHz
• Mounting Style: SMD/SMT
• Package / Case: SOT-23-6
• Duty Cycle (max): 75 %
• Number Of Outputs: 2
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

RYC9901
Multi-LED Boost
ORDERING INFORMATION
MATERIALS INFORMATION
PIN CONFIGURATION
PIN DESCRIPTION
Pin Number
1
2
3
4
5
6
BLOCK DIAGRAM
Tyco Electronics Corporation 308 Constitution Drive, Menlo Park, CA 94025 Tel: [phone] Fax: [phone]
© 2005 Tyco Electronics Corporation.
Part Description
RYC9901
ROHS Compliant
PGND
GND
ENABLE / DIM
Pin Name
FB
GND
PGND
LX
VCC
FB
1
3
2
ENABLE
Part Number
E67308-000
Pin Function
Feedback: This pin is the feedback to the PWM to control the output current. Attach
to a current sense resistor.
Ground.
Power Ground.
Enable: A logic low turns on the converter. A logic high or open turns off the converter.
A PWM signal on this pin dims the output.
Switch Node: Connection to internal power MOSFET. Attach to inductor and diode.
VCC. Power input to run the IC.
FB
5
4
6
VCC
LX
ENABLE/DIM
ELV Compliant
Reference
Oscillator
Divider
Erro
Am
PWM Logic
Reference
& Thermal
Protection
Comparator
VCC
Current
GND
DEVICE MARKING
9901
Clamp
SOT-23(6L)
Package
Pb-Free
L
PGND
Raychem Logo
Lot ID
Part ID
www.tycopowercomponents.com
Document: SCD 25493
Status: Released
Rev.: D
Rev Date: March 8, 2005
Raychem
Power Management ICs
Bottom: Date code
Tape and Reel Quantity
Top:
2,500 pcs
Part Number
2 of 12