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AS3608 数据表(PDF) 21 Page - ams AG

部件名 AS3608
功能描述  System PMU with HV Back Light Driver
PDF  68 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  AMSCO [ams AG]
网页  http://www.ams.com
标志 AMSCO - ams AG

AS3608 数据表(HTML) 21 Page - ams AG

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www.austriamicrosystems.com
Revision 1.03
20 - 67
AS3608 2v2
Data Sheet - D e t a i l e d D e s c r i p t i o n - P o w e r M anage ment F uncti ons
8.3.6 Parameter
VSUPx=3.6V, TA= 25ºC, unless otherwise specified.
Figure 10. 30V Step-Up Performance Characteristics
Table 7. DCDC Parameter
Symbol
Parameter
Condition
Min
Typ
Max
Unit
VSW
High Voltage Pin
Pin FBSU
0
30
V
IVDD
Quiescent Current
Pulse Skipping mode
140
µA
VFB
Feedback Voltage, Transientt
Pin CURR1 or CURR2
0
30
V
Pin FBSU
0
5
V
VFBSU
Feedback Voltage, for voltage
regulation
Pin FBSU
1.2
1.25
1.3
V
VCURR
Feedback Voltage, for current sink
regulation
Pin CURR1 or CURR2
0.4
0.5
0.6
V
IDCDC_FB
Additional Tuning Current at Pin
DCDC_FB and over voltage
protection
Adjustable by software using Register DCDC
control1
1µA step size (0-31µA)
VPROTECT = 1.25V +
IDCDC_FB * R1
031
µA
Accuracy of Feedback Current at
full scale
-6
6
%
RSW
Switch Resistance
1
Ω
ILOAD
Load Current
@ 30V output voltage
0
50
mA
FSW
Fixed Switching Frequency
SU_FREQU = 0
1
MHz
COUT
Output Capacitor
Ceramic, ±20%. Use nominal 4.7µF capacitors
to obtain at least 0.7µF under all conditions
(voltage dependence of capacitors)
0.7
4.7
µF
L
Inductor
Use inductors with small CPARASITIC (<100pF)
for high efficiency
710
13
µH
tMIN_ON
Minimum On-Time
Guaranteed per design
100
190
ns
MDC
Maximum Duty Cycle
Guaranteed per design
84
90
%
DCDC Boost 6 LEDs
55,00
60,00
65,00
70,00
75,00
80,00
85,00
90,00
1
10
100
Output Current [mA]



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