STCF01PMR STMicroelectronics, STCF01PMR Datasheet - Page 8
![IC LED DRIVER PHOTO FLASH 10-DFN](/photos/6/97/69716/497-10-dfn_series_sml.jpg)
STCF01PMR
Manufacturer Part Number
STCF01PMR
Description
IC LED DRIVER PHOTO FLASH 10-DFN
Manufacturer
STMicroelectronics
Type
Photo Flash LEDr
Datasheet
1.STCF01PMR.pdf
(16 pages)
Specifications of STCF01PMR
Constant Current
Yes
Topology
PWM, Step-Up (Boost)
Number Of Outputs
1
Internal Driver
Yes
Type - Primary
Flash/Torch
Type - Secondary
White LED
Frequency
1.2MHz ~ 1.8MHz
Voltage - Supply
2.6 V ~ 5.5 V
Voltage - Output
17V
Mounting Type
Surface Mount
Package / Case
10-DFN
Operating Temperature
-40°C ~ 85°C
Current - Output / Channel
300mA
Internal Switch(s)
Yes
Efficiency
80%
For Use With
497-6239 - BOARD EVAL FLASH DRIVER STCF01
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-6912-2
STCF01PMR
STCF01PMR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
STCF01PMR
Manufacturer:
ST
Quantity:
20 000
Detailed description
6
8/16
Detailed description
The STCF01 white Led boost converter drives from two up to four white LEDs with a constant
current. It needs few external components: two ceramic capacitors (C
inductor L=10µH and one schottky diode. The device works with a minimum V
an Over Voltage Protection on the output guaranteed at minimum value equal to 17V. This
value ensures proper operation with a maximum of four White LEDs in series. In the worst case
of V
V
maximum IO current is limited by inductor peak current internally set at Typ 1.2A. This feature
allows for a longer battery life as it reduces intensive use of the flash. The SEL pin allows
selection of high and low current values flowing on the White LEDs.
The two current values are set through external resistors R
following formula:
I
I
A High logic level on SHDN pin puts the device in shutdown mode; if it is held at LOW the flash
or torch mode is activated. When the SHDN pin is LOW the device provides the requested
current in less than 200µs (see TURN ON TIME plot). This fast turn-on time makes the device
suitable for single shoot and multiple shoot operation modes.
LED(FLASH)
LED(TORCH)
OVP
I
=2.6V at V
=11V (typical value of three LEDs) it is possible obtain I
= 2100 * (V
= 2400 * (V
OVP
=8V (typical value of two LEDs) it is possible to obtain I
I
I
- V
- V
HC
LC
) / R
) / R
HC
LC
HC
O
=180mA (
and R
LC
I
=2.2µF C
according to the
Figure 4
O
=270mA, while at
I
=2.6V, and it has
O
). The
=4.7µF), one
STCF01