MP3351
60V, 2A Integrated Photo Flash Charger
With IGBT Driver
The Future of Analog IC Technology
DESCRIPTION
The MP3351 is a fast, highly efficient, precision
high voltage photo-flash charger with integrated
IGBT driver for xenon flash applications. The
programmable peak current from 300mA to 2A.
A 200mΩ internal power switch minimizes the
conduction loss. 60V maximum output voltage
lowers the transformer turns ratio and improves
switching loss associated with the primary
leakage inductance. External feedback provides
3% charge accuracy.
The MP3351 is available in a 16-pin 3mm x
3mm QFN package
FEATURES
•
•
•
•
•
•
•
•
•
Integrated 60V, 200mΩ Power Switch
Operates from a Single or Duel-Cell Li+ Battery
2A peak current w/resistor program
3% Charge Accuracy
Integrated IGBT Driver
Digital Still Cameras
Optical Film Cameras
Mobile Phones With Camera
PDAs With Camera
APPLICATIONS
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks
of Monolithic Power Systems, Inc.
TYPICAL APPLICATION
VBATT
1.3V-9V
Single or Dual Cell Battery
3-6V
T1
+
-
V
OUT
V
IN
3, 6
1
ISET
12, 13
SW
7, 8
PGND
RDYB
15
2, 4
GND
MP3351
IGBTIN
14
16
FB
IGBT
CHARGE
9
10, 11
5
N/C
IGBTOUT
MP3351 Rev. 0.91
9/2/2008
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
1
MP3351 – 60V, 2A INTEGRATED PHOTO FLASH CHARGER WITH IGBT DRIVER
PACKAGE REFERENCE
ABSOLUTE MAXIMUM RATINGS
(1)
V
IN
to GND ........................................ -0.3V to 6V
CHARGE, ISET, IGBTIN, RDYB to GND..-0.3V to 6V
FB to GND ........................................ -0.3V to 6V
SW to GND ..................................... -0.3V to 60V
Maximum Operating Frequency .............400kHz
Operating Temperature Ranges ....-40°C to +85°C
Storage Temperature ...............-55°C to +150°C
Junction Temperature.............................+150°C
Lead Temperature (Solder) ....................+260°C
16
1
2
3
4
5
15
14
13
12
11
10
9
Thermal Resistance
(2)
6
7
8
QFN16 (3mm x 3mm) ............. 50 ...... 12...
°C/W
Notes:
1) Exceeding these ratings may damage the device.
2) Measured on approximately 1” square of 1 oz copper.
θ
JA
θ
JC
Part Number*
MP3351DQ
*
Package
QFN16-3
Temperature
–40°C to +85°C
For Tape & Reel, add suffix –Z (eg. MP3351DQ–Z)
For RoHS compliant packaging, add suffix –LF (eg.
MP3351DQ–LF–Z)
ELECTRICAL CHARACTERISTICS
(V
IN
=V (CHARGE)=3.3V, T
A
= +25°C, unless otherwise noted.)
Parameter
Photoflash Capacitor Charger
V
IN
Voltage Range
V
IN
UVLO
V
IN
Quiescent Current
V
IN
Quiescent Current
Shutdown Current from V
IN
V
SW
Leakage Current
SW ON resistance between SW
and GND
Charge Input High Voltage
Charge Input Low Voltage
Pull-down resistance of
CHARGE pin
I
PEAK1
I
PEAK2
Charge completion detect
voltage at FB
FB input bias current I(FB)
DCM Comparator threshold
Conditions
Min
3
2.7
Typ
Max
6
2.9
5
1
2
0.2
2.4
0.6
V(CHARGE)=3.3V
R
SET
=43.1kΩ
R
SET
=100kΩ
1.08
0.3
1.176
With 1.2KΩ (1%) connected to FB
-0.2
15
100
1.20
0.5
1.20
25
1.32
0.7
1.224
0.2
35
Unit
V
V
mA
µA
µA
µA
Ω
V
V
kΩ
A
A
V
µA
mV
Rising edge, hysteresis = 200mV
V(CHARGE)=High, V(SW) = 0, free
run by T
ONMAX
V(CHARGE)=High, V(FB) = 1.3V
V(CHARGE)=Low, V
IN
=3.3V
V
IN
=3.3V,V
SW
=60V, in Shutdown
Switch turn-on
2.8
2.5
50
MP3351 Rev. 0.91
9/2/2008
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
2
MP3351 – 60V, 2A INTEGRATED PHOTO FLASH CHARGER WITH IGBT DRIVER
ELECTRICAL CHARACTERISTICS
(continued)
(V
IN
=V (CHARGE)=3.3V, T
A
= +25°C, unless otherwise noted.)
Parameter
RDYB Leakage Current
RDYB Output Low Voltage
MAX T
ON
Thermal Shutdown
IGBT Driver
IGBTOUT pull-up ON resistance
IGBTOUT pull-down ON
resistance
IGBTIN Input High Voltage
IGBTIN Input Low Voltage
Propagation delay
IGBTIN rising/falling edge to
IGBTOUT rising/falling edge,
C
GATE
=6500pF
C
GATE
=6500pF
C
GATE
=6500pF
45
60
70
100K
2.4
0.6
Conditions
V(RDYB)=3.3V
I
SINK
= 2mA
Maximum T
ON
time
Rising edge, Hysteresis = 15 C
o
Min
Typ
0.2
Max
1
Unit
µA
V
µs
o
50
80
150
4
4
120
C
Ω
Ω
V
V
ns
ns
ns
Ω
IGBTOUT rise time
IGBTOUT fall time
Pull down resistance of IGBTIN
PIN FUNCTIONS
Pin#
1
2, 4
3, 6
5
7, 8
Name
ISET
GND
VIN
IGBTOUT
PGND,
Exposed Pad
CHARGE
SW
IGBTIN
RDYB
FB
Description
Peak Current Set Input. The peak current is 5 X10
4
the current flow out of this pin.
Analog Ground. Tie it directly to local ground plane.
Input Supply Pin. Connect it to system supply voltage. Bypass VIN to GND with a
0.1uF or greater ceramic capacitor.
Output Drive for IGBT Gate. Connect this pin to the gate of the IGBT.
Power Ground. Ground connection for the power switch. Connect Exposed Pad to
PGND.
Charge Enable Pin. A low to high transition on this pin puts the part into power
delivery mode. Once the target voltage is reached, the part will stop charging the
output. Toggle this pin will start charging again. Bring this pin low will terminate the
power delivery and put the part in shutdown.
Switch Pin. This is the drain of the internal power switch.
Logic Input Pin for IGBT Drive.
Open-Drain Power-Ready Output. RDYB becomes low when the output voltage is
reached.
Feedback Pin. Its trip voltage is 1.2V.
9
12, 13
14
15
16
MP3351 Rev. 0.91
9/2/2008
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
3
MP3351 – 60V, 2A INTEGRATED PHOTO FLASH CHARGER WITH IGBT DRIVER
TYPICAL PERFORMANCE CHARACTERISTICS
V
OUT
= 300V, I
SET
= 2A, T
A
= +25ºC, unless otherwise noted.
50
100
150
200
250
300
2
3
4
5
6
7
1
0
3
4
5
6
7
2
3
4
5
6
7
MP3351 Rev. 0.91
9/2/2008
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
4
MP3351 – 60V, 2A INTEGRATED PHOTO FLASH CHARGER WITH IGBT DRIVER
TYPICAL PERFORMANCE CHARACTERISTICS
(continued)
V
OUT
= 300V, I
SET
= 2A, T
A
= +25ºC, unless otherwise noted.
Flash
MP3351 Rev. 0.91
9/2/2008
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
5
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