A8739EEETR-T Allegro Microsystems Inc, A8739EEETR-T Datasheet - Page 4

• Manufacturer Part Number: A8739EEETR-T
• Description: Photoflash Capacitor Charger
• Manufacturer: Allegro Microsystems Inc
• Type: Flash/Torchr

Specifications of A8739EEETR-T

• Number Of Outputs: *
• Internal Driver: No
• Type - Primary: Flash/Torch
• Voltage - Supply: *
• Mounting Type: Surface Mount
• Package / Case: 8-UFDFN Exposed Pad
• Operating Temperature: *
• Voltage - Output: *
• Frequency: *
• Current - Output / Channel: *
• Internal Switch(s): Yes
• Efficiency: 75%
• Topology: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 620-1365-2

A8739
ELECTRICAL CHARACTERISTICS
guaranteed from −40°C to 85°C ambient, unless otherwise noted
Continued on the next page…
VBAT Voltage Range
VIN_DRV Voltage Range
UVLO Enable Threshold
UVLO Hysteresis
V
VBAT Pin Supply Current
Current Limit
Primary-Side Current Limit
Switch On-Resistance
Switch Leakage Current
CHARGE Pull-down Resistance
CHARGE Input Voltage
Switch Current Limit (ILIM Programming Input
IN
Supply Current
on CHARGE Pin)
Characteristics
2
2
1
Ultra-Small Mobile Adjustable Xenon Photoflash
Typical values are valid at V
R
V
V
Symbol
I
I
I
I
I
I
I
R
I
I
I
I
I
I
I
I
I
SWLIM10
SWLIM11
SWLIM12
SWLIM13
SWLIM14
SWLIM15
SWLIM16
INUV(hys)
I
SWDS(on)
SWLIM1
SWLIM2
SWLIM3
SWLIM4
SWLIM5
SWLIM6
SWLIM7
SWLIM8
SWLIM9
V
CHARGE
I
SWLIM
V
CHGPD
SWLK
I
V
INUV
BAT
I
BAT
IN
IN
V
Shutdown (CHARGE = 0 V, TRIG = 0 V)
Charging complete
Charging (CHARGE = V
Shutdown (CHARGE = 0 V, TRIG = 0 V)
Charging done (CHARGE = V
¯ D ¯ ¯ O ¯ ¯ N ¯ ¯ E ¯ = 0 V)
Charging (CHARGE = V
100% setting
Default setting
One pulse applied to CHARGE pin
Two pulses applied to CHARGE pin
Three pulses applied to CHARGE pin
Four pulses applied to CHARGE pin
Five pulses applied to CHARGE pin
Six pulses applied to CHARGE pin
Seven pulses applied to CHARGE pin
Eight pulses applied to CHARGE pin
Nine pulses applied to CHARGE pin
Ten pulses applied to CHARGE pin
Eleven pulses applied to CHARGE pin
Twelve pulses applied to CHARGE pin
Thirteen pulses applied to CHARGE pin
Fourteen pulses applied to CHARGE pin
Fifteen pulses applied to CHARGE pin
V
V
High, over input supply range
Low, over input supply range
Capacitor Charger with IGBT Driver
IN
IN_DRV
SW
rising
= 5.5, over full temperature range
= 3.6 V, I
IN
= V
D
BAT
Test Conditions
= 800 mA, T
= 3.6 V; T
IN
IN
, TRIG = 0 V)
, TRIG = 0 V)
IN
A
,
= 25°C
A
= 25°C, except
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
indicates specifications
Min.
1.35
2.0
2.3
1.0
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Typ.
2.05
0.02
0.01
1.50
150
100
100
0.4
50
50
95
90
86
81
76
71
67
62
57
52
48
43
38
33
29
–
–
2
–
–
–
–
Max.
1.65
100
5.5
5.5
2.2
0.5
0.4
–
1
5
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
2
–
–
–
Unit
mV
mA
kΩ
μA
μA
μA
μA
μA
μA
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
V
V
V
Ω
V
V
A
4