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AS3643 датащи(PDF) 5 Page - ams AG

номер детали AS3643
подробное описание детали  1300mA High Current LED Flash Driver
PDF  34 Pages
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производитель  AMSCO [ams AG]
домашняя страница  http://www.ams.com
Logo AMSCO - ams AG

AS3643 датащи(HTML) 5 Page - ams AG

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AS3643
Datasheet, Confidential - 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
6 Electrical Characteristics
VVIN = +2.7V to +4.4V, TAMB = -30ºC to +85ºC, unless otherwise specified. Typical values are at VVIN = +3.7V, TAMB =
+25ºC, unless otherwise specified.
Table 4. Electrical Characteristics
Symbol
Parameter
Condition
Min
Typ
Max
Unit
General Operating Conditions
VVIN
Supply Voltage
pin VIN
2.7
3.7
4.4
V
VVINREDUCE
D_FUNC
Supply Voltage
AS3643 functionally working, but not all
parameters fulfilled
2.5
2.7
V
4.4
5.5
ISHUTDOWN
Shutdown Current
TXMASK/TORCH=L, SCL=SDA=0V,
VVIN<3.7V
0.6
2.0
µA
ISTANBY
Standby Current
interface active, TXMASK/TORCH=L,
VVIN<3.7V
1
1.0
10
µA
TAMB
Operating
Temperature
-30
25
85
ºC
Eta
Application Efficiency
(DCDC and current
sink)
LCOIL=0.6µH@3A, LESR=60m
,
LED_OUT1,2=1300mA
2, tFLASH<300ms
84
%
DCDC Step Up Converter
VVOUT
DCDC Boost output
Voltage
(pin VOUT1/2)
2.8
5.5
V
VVOUT5V
DCDC Boost output
Voltage
(pin VOUT1/2)
constant voltage mode operation
const_v_mode (see page 23)=1
5.0
V
RPMOS
On-resistance
DCDC internal PMOS switch
70
m
RNMOS
On-resistance
DCDC internal NMOS switch
70
m
fCLK
Operating Frequency
All internal timings are derived from this
oscillator
-7.5%
4.0
+7.5% MHz
Current Sinks
VLED
LED forward voltage
single LED at 1300mA
2.8
3.4
4.2
V
ILED_OUT
LED_OUT1/2 current
sinks output combined
single LED
0
1300
mA
ILED_OUT
LED_OUT1/2 current
sink accuracy
ILED_OUT>650mA or ILED_OUT<500mA
0ºC < TJ < 100ºC
-7
+7
%
500mA<ILED_OUT<650mA, 0ºC < TJ < 100ºC
-5
+5
%
ILED_OUT
RAMP
LED_OUT1/2 ramp
time
Ramp-up During startup
250
1000
µs
Ramp-down
500
1000
µs
ILED_OUT
RIPPLE
LED_OUT current
ripple
ILED_OUT = 1000mA, BW=20MHz
20
mAPP
VILED_COMP
LED_OUT current
sink voltage
compliance
Minimum voltage between pin LED_OUT1/2
and GND for operation of the current sink
286
mV
VHIGH_VDS Comparator High VDS low vds and high vds comparator - see 4MHz/
1MHz Operating Mode Switching on page 11
870
mV
VLOW_VDS
Comparator Low VDS
280
ILEAK_
LED_OUT
LED_OUT1/2
Leakage Current
Pins LED_OUT1 and LED_OUT2
-1.0
0.0
+1.0
µA
Protection and Fault Detection Functions (see page 11)



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