A8439EEJTR-T Allegro Microsystems Inc, A8439EEJTR-T Datasheet - Page 4

• Manufacturer Part Number: A8439EEJTR-T
• Description: IC CHARGER PHOTO FLASH 10MLP
• Manufacturer: Allegro Microsystems Inc

Specifications of A8439EEJTR-T

• Applications: Photoflash Capacitor Charger
• Current - Supply: 1.5mA
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-WFDFN Exposed Pad
• Input Voltage: 5.5V
• No. Of Outputs: 1
• Supply Voltage Range: 3V To 5.5V
• No. Of Pins: 10
• Operating Temperature Range: -40°C To +85°C
• Termination Type: SMD
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 620-1203-2; A8439EEJTR-T

A8439
ELECTRICAL CHARACTERISTICS
Supply Voltage*
Supply Current
Primary Side Current Limit
(ILIM clock input at CHARGE pin)
SW On Resistance
SW Leakage Current*
SW Maximum Off-Time
SW Maximum On-Time
CHARGE Input Current
CHARGE Input Voltage*
ILIM Clock High Time at
CHARGE Pin
ILIM Clock Low Time at
CHARGE Pin
Total ILIM Setup Time
¯ D ¯ ¯ O ¯ ¯ N ¯ ¯ E ¯ Output Leakage Current*
¯ D ¯ ¯ O ¯ ¯ N ¯ ¯ E ¯ Output Low Voltage*
FB Voltage Threshold*
FB Input Current
Auto-Refresh Threshold Level
UVLO Enable Threshold
UVLO Hysteresis
IGBT Driver
IGBTDRV On Resistance to VIN
IGBTDRV On Resistance to GND
TRIGGER Input Current
TRIGGER Input Voltage*
Propagation Delay, Rising
Propagation Delay, Falling
Output Rise Time
Output Fall Time
*Guaranteed by design and characterization over operating temperature range, –40°C to 85°C.
Characteristics
Photoflash Capacitor Charger with IGBT Driver and Refresh
V
V
V
V
R
V
R
R
I
TRIGGER(H)
t
V
I
TRIGGER(L)
CHARGE(H)
I
CHARGE(L)
DONELKG
Symbol
t
t
I
I
I
I
I
I
I
I
OFF(Max)
t
TRIGGER
Typical values at T
DS(On)SW
I
CHARGE
UVLOHYS
DS(On)I-G
ON(Max)
t
ILIM(SU)
V
DS(On)I-V
SWLIM1
SWLIM2
SWLIM3
SWLIM4
SWLIM5
SWLIM6
SWLIM7
SWLIM8
ILIM1(H)
t
SWLKG
DONE(L)
ILIM(H)
V
ILIM(L)
V
V
UVLO
I
I
t
t
FBR
FB
IN
Dr
Df
t
t
FB
IN
r
f
Charging
Charging done / Refresh monitoring
Shutdown (V
V
V
V
Initial pulse
Subsequent pulses
32 μA into ¯ D ¯ ¯ O ¯ ¯ N ¯ ¯ E ¯ pin
V
V
V
V
V
R
R
R
R
IN
SW
CHARGE
FB
IN
IN
IN
TRIGGER
gate
gate
gate
gate
= 3.3 V, I
rising
= 3.3 V, V
= 3.3 V, V
= 1.205 V
= 35 V
=12 Ω, C
=12 Ω, C
=12 Ω, C
=12 Ω, C
A
= 25°C and V
= V
= V
D
IN
CHARGE
IN
IGBTDRV
IGBTDRV
LOAD
LOAD
LOAD
LOAD
= 800 mA, T
= 6500 pF, V
= 6500 pF, V
= 6500 pF, V
= 6500 pF, V
Test Conditions
= 0 V, V
IN
= 1.5 V, V
= 1.5 V, V
= 3.3 V (unless otherwise noted)
A
TRIGGER
= 25°C
TRIGGER
TRIGGER
IN
IN
IN
IN
= 3.3 V
= 3.3 V
= 3.3 V
= 3.3 V
= 0 V)
= V
= 0 V
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
IN
1.187 1.205 1.223
2.55
Min.
1.2
0.2
0.2
20
3
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
2
–
–
–
–
–
–
–
–
–
–
2
–
–
–
–
–
–120
0.01
0.86
0.55
0.27
0.27
1.07
2.65
Typ.
300
150
1.5
1.4
1.2
1.0
0.7
0.4
18
18
54
30
30
70
70
–
–
–
–
–
–
–
–
–
–
5
6
–
–
–
Max. Units
2.75
600
100
5.5
1.6
0.8
0.8
–
1
–
–
–
–
–
–
–
–
1
–
–
1
–
–
–
–
–
1
–
–
–
–
–
1
–
–
–
–
–
mV
mV
mA
μA
μA
μA
μs
μs
μA
μs
μs
μs
μs
μA
nA
μA
ns
ns
ns
ns
V
Ω
V
V
V
V
V
Ω
Ω
V
V
A
A
A
A
A
A
A
A
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