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AS3606 Datasheet(PDF) 18 Page - ams AG

Part No. AS3606
Description  System PMU with HV Back Light Driver
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Maker  AMSCO [ams AG]
Homepage  http://www.ams.com
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AS3606 Datasheet(HTML) 18 Page - ams AG

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Revision 1.03
17 - 70
AS3606 AS3607 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
DVM (Dynamic Voltage Management). To minimize the over-/undershoot during a change of the output voltage, the DVM can be enabled.
With DVM the output voltage will ramp up/down with a selectable slope after the new value was written to the registers. Without DVM the slew
rate of the output voltage is only determined by external components like the coil and load capacitor as well as the load current.
Fast Regulation Mode. This mode can be used to react faster on sudden load changes and thus minimize the over-/undershoot of the output
voltage. FRM needs an 22uF output capacitor instead the 10uF one to guarantee the stability of the regulator.
Low Frequency Operation. Especially for very low load conditions, e.g. during a sleep mode of a processor, the switching frequency can be
reduced to achieve a higher efficiency.
100% PMOS ON Mode for Low Dropout Regulation. For low input to output voltage difference the DCDC converter can use 100% duty
cycle for the PMOS transistor, which is than in LDO mode.
8.2.2 Parameter
VSUP=3.6, TA= 25ºC, unless otherwise specified.
Table 5. DCDC Parameter
Symbol
Parameter
Condition
Min
Typ
Max
Unit
VIN
Input voltage
VSUPx
2.7
5.5
V
VOUT
Regulated output voltage
0.6125
3.35
V
VOUT_tol
Output voltage tolerance
minimum ±50mV
-3%
3%
mV
Iload
Maximum Load current
600
700
mA
ILIMIT
Current limit
1000
mA
RPSW
P-Switch ON resistance
VSUPx=3.0V
0.5
0.7
Ω
RNSW
N-Switch ON resistance
VSUPx=3.0V
0.5
0.7
Ω
fSW
Switching frequency
depending on DCDC_Cntr settings
1/2
MHz
fSWsc
Switching frequency
in shortcut case
0.6
MHz
Cout
Output capacitor
Ceramic, ±10% tolerance
10
µF
Lx
Inductor
±10% tolerance
2.2
µH
ηeff
Efficiency
Iout=150mA, Vout=3.0V
97
%
IVDD
Current consumption
Operating current without load
Shutdown current
65
0.1
µA
tMIN_ON
Minimum on time
80
ns
tMIN_OFF
Minimum off time
40
ns
VLineReg
Line regulation
Static
2
mV
Transient; Slope: tr=10µs, 100mV step, 200mA
load
10
VLoadReg
Load regulation
Static
5
mV
Transient; Slope: tr=10µs,
100mA step
50


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