RT9591 Datasheet PDF - Richtek Technology

www.Datasheet-PDF.com

RT9591
Richtek Technology

Part Number RT9591
Description Smart Photoflash Capacitor Charger
Page 13 Pages


RT9591 datasheet pdf
View PDF for PC
RT9591 pdf
View PDF for Mobile


No Preview Available !

Preliminary
RT9591
Smart Photoflash Capacitor Charger with IGBT Driver
General Description
The RT9591 is a highly integrated photoflash charging
solution in digital and film cameras. It is targeted for
applications that use either two AA batteries or a single
lithium-ion battery.
The RT9591 integrates a constant current controller for
charging high voltage photoflash capacitor quickly and
efficiently, an IGBT driver for igniting flash tube, and a
voltage detector. Only a few external components are
used to reduce PCB space and cost.
RT9591 is available in VQFN-16L 3x3 package.
Ordering Information
RT9591
Package Type
QV : VQFN-16L 3x3 (V-Type)
Operating Temperature Range
P : Pb Free with Commercial Standard
Note :
RichTek Pb-free products are :
`RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
`Suitable for use in SnPb or Pb-free soldering processes.
`100% matte tin (Sn) plating.
Marking Information
For marking information, contact our sales representative
directly or through a RichTek distributor located in your
area, otherwise visit our website for detail.
Features
z 1.8V to 6.5V Battery Input Voltage Range
z Charges Any Size Photoflash Capacitor
z Adjustable Input Current
z Uses Standard Transformers
z Adjustable Output Voltage
z Charge Complete Indicator
z Built-in IGBT Driver for IGBT Application
z Built-in Voltage Detector
z 16-Lead VQFN Package
z RoHS Compliant and 100% Lead (Pb)-Free
Applications
z Digital Still Camera
z Film Camera Flash Unit
z Camera Phone Flash
Pin Configurations
(TOP VIEW)
16 15 14 13
FB
PGND
EXT
GND
1
2
3
4
GND
12 DRVOUT
11 VDRV
10 IMCD
9 VDOUT
5678
VQFN-16L 3x3
DS9591-04 November 2005
Patent Pending
www.richtek.com
1



No Preview Available !

RT9591
Typical Application Circuit
Preliminary
VBAT
1.8V to 6.5V
R6
1.5M
Delta
86A-3145
T1
1 : 15
CIN
10uF SW
AO3400
Q1
VDD
3.3V
R7 1M
16 3
8 FBVD
10
5 VDD
DRVIN 14 Strobe
1uF R8
100k
RT9591 VDRV
DRVOUT
11
12
7 STAT
6 CHARGE
2 PGND
GNDDRV 13
FB 1
9 15 4
R4
1M
R5
2M
VOUT
GSD2004S
R1
150k
0805
R2
5V 150k
0805
COUT
100uF/
300V
0.1uF
R3
1k
Figure 1. Photoflash Capacitor Charger Application
VBAT
1.8V to 6.5V
VDD
3.3V 1uF
ASATECH
ST-532553A
T1
1 : 14
CIN
10uF SW
AO3400
Q1
16 3
8 FBVD
10
5 VDD
DRVIN 14 Strobe
R8
100k
6
7
2
STAT
CHARGE
PGND
RT9591
VDRV
DRVOUT
11
12
GNDDRV 13
FB 1
9 15 4
R4
560k
VOUT
GSD2004S
R1
150k
0805
R2
5V 150k
0805
COUT
47uF/
300V
0.1uF
R3
1k
Flash-Tube
Flash-Tube
www.richtek.com
2
Figure 2. Photoflash Capacitor Charger Application for Low Charging Current
Patent Pending
DS9591-04 November 2005



No Preview Available !

Preliminary
RT9591
VBAT
1.8V to 6.5V
R5
1.5M
Delta
86A-3145B
T1
1 : 15
CIN 1
10uF
SW
AO3400
14
1
Q1
GSD2004S
VOUT
COUT
R1 100uF/
19k 300V
VDD
3.3V
R6 1M
16 3
8 FBVD
10
5 VDD
DRVIN 14 Strobe
1uF
R7
100k
6
7
2
RT9591 VDRV
DRVOUT
STAT
CHARGE
PGND
GNDDRV
FB
11
12
13
1
9 15 4
R3
1M
R4
2M
5V
0.1uF
R2
1k
Flash-Tube
Figure 3. Photoflash Capacitor Charger Application with Center-Tap Transformer
DS9591-04 November 2005
Patent Pending
www.richtek.com
3



No Preview Available !

RT9591
Preliminary
Function Block Diagram
VBAT
VDD
CS
CHARGE
GND
FBVD
DRVIN
Constant Peak
Current Control
1M
Charging Block
Latch
RQ
S
One
Shot
VDD
Driver
+ - 3.6Ω
36mV
Chip Enable
One
Shot
Latch
RQ
S
Charging Block Enable
Voltage Detector
HV Detector
1.0V Reference
IGBT Driver
EXT
PGND
IMCD
STAT
FB
VDOUT
VDRV
DRVOUT
GNDDRV
Functional Pin Description
Pin Number Pin Name Pin Function
1 FB
Feedback Voltage Pin
2 PGND Power Ground
3 EXT Output Pin for driving external NMOS on Flyback topology
4
GND
Ground
5 VDD Power Input Pin of RT9591
6 CHARGE Charge Enable Pin, the charge function is executed when CHARGE pin is set from Low
to High. And the RT9591 gets into Shutdown mode when CHARGE pin is set to Low
7
STAT
Charge Status Output. Open Drain output. When target output voltage is reached, NMOS
turns off. This pin needs a pull up resistor.
8 FBVD Voltage Detector Feedback Pin
9 VDOUT Voltage Detector Output Pin, Open Drain output
10
IMCD
Minimum Current Detection Pin
11 VDRV IGBT Driver Power Pin
12 DRVOUT IGBT Driver Output Pin
13 GNDDRV IGBT Driver Ground pin
14 DRVIN IGBT Driver Input Pin
15 CS
Input Current Setting Pin
16
VBAT
Battery Supply Voltage Input Pin
Exposed Pad GND
Exposed pad should be soldered to PCB board and connected to GND
www.richtek.com
4
Patent Pending
DS9591-04 November 2005



RT9591 datasheet pdf
Download PDF
RT9591 pdf
View PDF for Mobile


Related : Start with RT959 Part Numbers by
RT9591 Smart Photoflash Capacitor Charger RT9591
Richtek Technology
RT9591 pdf
RT9594A MOSFET Integrated Smart Photoflash Capacitor Charger RT9594A
Richtek Technology
RT9594A pdf
RT9594B MOSFET Integrated Smart Photoflash Capacitor Charger RT9594B
Richtek Technology
RT9594B pdf
RT9595 MOSFET Integrated Smart Photoflash Capacitor Charger RT9595
Richtek Technology
RT9595 pdf
RT9598 MOSFET Integrated Smart Photoflash Capacitor Charger RT9598
Richtek Technology
RT9598 pdf

Index :   0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z   

This is a individually operated, non profit site. If this site is good enough to show, please introduce this site to others.
Since 2010   ::   HOME   ::   Privacy Policy + Contact