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IS31BL3506A の電気的特性と機能

IS31BL3506AのメーカーはISSIです、この部品の機能は「1.0MHZ BOOST CONVERTER」です。


製品の詳細 ( Datasheet PDF )

部品番号 IS31BL3506A
部品説明 1.0MHZ BOOST CONVERTER
メーカ ISSI
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IS31BL3506A Datasheet, IS31BL3506A PDF,ピン配置, 機能
IS31BL3506A
1.0MHZ BOOST CONVERTER WITH 35V INTERNAL MOSFET SWITCH
July 2012
GENERAL DESCRIPTION
IS31BL3506A is a boost converter featuring an
integrated MOSFET switch designed for driving series
strings of LED or other device. Input operating voltage
range is 2.7V~5.5V. The device regulates the LED load
current is set using an external, low value sensing
resistor. The device adjusts the PWM duty cycle of the
switch to maintain the voltage at the FB pin at a value
of 0.3V. The IS31BL3506A operates at a constant
switching frequency of 1.0MHz to allow for small
component size. IS31BL3506A features an over
voltage shutdown pin which prevents the output
voltage from exceeding 35V (typ.) in the case of an
open circuit condition. The device is offered in a tiny
TSOT-23-6 and DFN-8 (2mm×2mm) package and a
temperature rating from -40°C ~ +85°C.
FEATURES
Supply voltage: 2.7V~5.5V
Built-in soft start
Drive series strings of
-9 LEDs (DFN-8)
-8 LEDs (TSOT-23-6)
PWM or DC voltage dimming
Frequency of PWM is 500Hz ~ 500kHz
1.0MHz high speed switching frequency
300mV feedback voltage
Integrated high power MOSFET
Over voltage protection
-40°C ~ +85°C working temperature range
TSOT-23-6 and DFN-8 (2mm×2mm) package
APPLICATIONS
Small LCD Backlights
Notebook PC
GPS
TYPICAL APPLICATION CIRCUIT
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Figure 1 Constant current white LED driver using PWM at the EN pin to control intensity
Note 1: COUT must be rated for 50V. Smaller values of output capacitance will cause the LED current ripple to increase.
Note 2: The resistor REST should be placed as close as possible to the FB pin to prevent the EMI.
Note 3: Because of the different packages, VOVP is not the same (Page 6). 9 LEDs can be driven by DFN-8 package and 8 LEDs can be driven
by TSOT-23-6 package most.
Note 4: The high level of PWM signal for EN pin should last at least 200ns when power on, or the IC won’t start up.
Integrated Silicon Solution, Inc. – www.issi.com
Rev. B, 07/02/2012
1
datasheet pdf - http://www.DataSheet4U.net/

1 Page





IS31BL3506A pdf, ピン配列
IS31BL3506A
Figure 5 Constant output current with PWM dimming control
http://www.DataSheet4U.net/
Integrated Silicon Solution, Inc. – www.issi.com
Rev. B, 07/02/2012
3
datasheet pdf - http://www.DataSheet4U.net/


3Pages


IS31BL3506A 電子部品, 半導体
IS31BL3506A
ABSOLUTE MAXIMUM RATINGS
Supply voltage, VCC
LX pin voltage
-0.3V ~ +6.0V
-0.3V ~ +40V
Voltage at any input pin
-0.3V ~ +6.0V
Maximum junction temperature, TJMAX
Storage temperature range, TSTG
Operating temperature range, TA
ESD HBM
150°C
-65°C ~ +150°C
-40°C ~ +85°C
2kV
Note:
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only
and functional operation of the device at these or any other condition beyond those indicated in the operational sections of the specifications is
not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
Test conditionsTA = -40°C ~ +85°C, VCC = 3.6V, unless otherwise noted. Typical values at TA = 25°C.
Symbol
Parameter
Condition
Min Typ Max
VCC
ICC
ISD
VEN_ON
VEN_OFF
FOSC
DMAX
RDS_ON
ISW_LK
ISW_LIMIT
VOVP
VFB
TST
tPWM_H
Supply Voltage
Quiescent current
Switching
Shutdown Current
EN Input logic High
EN Input logic Low
Operating Frequency
VEN = 0V
VEN rising
VEN falling
Maximum Duty Cycle
LX Switch On resistance
LS Switch Leakage current
Switch over current limit
VSW = 35V
Duty = 90%
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TSOT-23-6
OUT over voltage protection
DFN-8
Feedback Voltage
Over temperature protection (Note 1)
EN pin PWM high level time
(when power on)
(Note 1)
2.7 5.5
1.2
1.5
1.4
0.4
1
90
0.8
1
1.8 2.2 2.6
35
38
0.3
160
200
Note 1: Guaranteed by design.
Unit
V
mA
μA
V
V
MHz
%
μA
A
V
V
°C
ns
Integrated Silicon Solution, Inc. – www.issi.com
Rev. B, 07/02/2012
6
datasheet pdf - http://www.DataSheet4U.net/

6 Page



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部品番号部品説明メーカ
IS31BL3506A

1.0MHZ BOOST CONVERTER

ISSI
ISSI
IS31BL3506B

1.0MHZ BOOST CONVERTER

ISSI
ISSI


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