AS3645 austriamicrosystems, AS3645 Datasheet - Page 5

• Manufacturer Part Number: AS3645
• Description: 1000/720ma Ultra Small High Efficient Single/dual Led Flash Driver With Safety Features
• Manufacturer: austriamicrosystems

AS3645
Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s
Table 3. Electrical Characteristics (Continued)
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Protection and Fault Detection Functions
Digital Interface
t
V
T
V
FLASHTIMEO
V
I
V
T
V
OVTEMPHY
RISETMAX
I
Symbol
LEDSHORT
INDSHORT
VOUTMAX
IND_OUT
LED_DET
OVTEMP
V
TXMASK
V
I
OPEN
LIMIT
V
UVLO
V
V
ISET
ST
UT
OL
IH
IL
Voltage on pin I2C/EN Maximum voltage on pin I2C/EN in shutdown if
Undervoltage Lockout
Current Limit
Flash Timeout Timer
Detection Threshold
lifetime operation in
Indicator LED short
V
Maximum Current
measured at 75%
maximum 40000s
Low Level Output
IND_OUT current
PWM duty cycle
Overtemperature
Overtemperature
Voltage on R
Single/Dual LED
overcurrent limit
Flash LED short
High Level Input
L
Low Level Input
VOUT
circuit detection
circuit detection
open detection
through R
DCDC
Parameter
Hysteresis
Protection
protection
voltage
voltage
Voltage
Voltage
Voltage
overvoltage
(Pin SW)
1
ISET
for coil
ISET
2
Pins TORCH, STROBE, SCL/EN1, SDA/EN2,
default value for I
default value for I
value for parallel interface
value for parallel interface
pins SCL/EN1 and SDA/EN2 in I
Can be adjusted in I
DCDC Converter Overvoltage Protection
see
Pin STROBE in parallel interface mode,
Detection threshold for open indicator
Voltage measured on pin LED_OUT
Voltage measured on pin IND_OUT
Device Startup and Operating Mode
(see page 10)
Voltage on R
detection on pin IND_OUT
TXMASK function is used
flash_timeout (page 20)
mode
mode
Junction temperature
selection on page 12
Revision 1.6
Falling V
Rising V
Condition
2
2
I
I2C/EN
OL
C mode;
C mode;
ISET
=4mA
2
C mode with register
in this mode
VIN
VIN
3
vref_offset (see
coil_peak=00b
coil_peak=01b
coil_peak (see
coil_peak=11b
vref_offset=01
vref_offset=10
vref_offset=11
page
page
2
C mode.
23)=10b
20)=00
V
1.125
1.575
-7.5%
2.275
+0.05
1.35
4.15
4.45
3.85
4.75
1.26
Min
UVLO
9.0
1.7
0.0
V
1.25
1.75
1.45
+0.1
4.35
4.65
4.05
4.95
Typ
200
144
850
UVLO
1.3
9.5
1.5
2.0
0.7
2.4
45
5
+7.5%
V
+0.15
1.375
1.925
Max
10.0
1.65
1.65
4.55
4.85
4.25
5.15
V
0.54
0.15
UVLO
0.5
2.2
1.2
2.5
VIN
I
% of
IND_O
Unit
ms
µA
UT
ºC
ºC
5 - 33
V
V
V
A
V
V
V
V
V
V
V
V
V
V
V