MAX1565 Datasheet, PDF (4/26 Pages) Maxim Integrated Products – Small, High-Efficiency, Five-Channel Digital Still Camera Power Supply

Small, High-Efficiency, Five-Channel
Digital Still Camera Power Supply
ELECTRICAL CHARACTERISTICS (continued)
(V_OUTSU = 3.3V, T_A = 0°C to +85°C, unless otherwise noted.)
PARAMETER
CONDITIONS
MIN TYP
AUXILIARY DC-TO-DC CONTROLLERS (AUX 1, 2, AND 3)
Maximum Duty Cycle
FB_ = 1V
80
85
FB_ Regulation Voltage
FB_ = COMP_
1.231 1.25
FB_ to COMP_
Transconductance
FB_ = COMP_
80
135
FB_ Input Leakage Current
FB_ = 1.25V
-100
+1
AUX1 Output Regulation Voltage FBSEL1 = GND, FB1 connected directly to AUX1 output 4.93
5
Output high
3
DL_ Driver Resistance
Output low
2
DL_ Drive Current
Sourcing or sinking
0.5
Soft-Start Interval
4096
LOGIC INPUTS (ON_ , FBSEL_)
Input Low Level
1.1V < OUTSU < 1.8V (ONSU only)
1.8V < OUTSU < 5.5V
Input High Level
FBSEL_ Input Leakage Current
ON_ Impedance to GND
1.1V < OUTSU < 1.8V (ONSU only)
1.8V < OUTSU < 5.5V
FBSEL = 3.6V, OUTSU = 3.6V
FBSEL = GND, OUTSU = 3.6V
ON_ = 3.35V
V_OUTSU
- 0.2
1.6
-100
0
-100
0
330
MAX
90
1.269
185
+100
5.07
10
5
0.2
0.4
+100
+100
UNITS
%
V
µS
nA
V
Ω
A
OSC
cycles
V
V
nA
kΩ
ELECTRICAL CHARACTERISTICS
(V_OUTSU = 3.3V, T_A = -40°C to +85°C, unless otherwise noted.)
PARAMETER
GENERAL
Input Voltage Range
(Note 2)
CONDITIONS
Minimum Startup Voltage
I_LOAD < 1mA, T_A = +25°C, startup voltage tempco is
-2300ppm/°C (typ) (Note 3)
Shutdown Supply Current into
OUTSU
ONSU = ONSD = ON1 = ON2 = ON3 = 0
OUTSU = 3.6V
Step-Up DC-to-DC Supply
Current into OUTSU
ONSU = 3.35V, FBSU = 1.5V
(does not include switching losses)
Step-Up Plus 1 AUX Supply
Current into OUTSU
ONSU = ON_ = 3.35V, FBSU = 1.5V, FB_ = 1.5V
(does not include switching losses)
Step-Up Plus Step-Down Supply ONSU = ONSD = 3.35V, FBSU = 1.5V, FBSD = 1.5V
Current into OUTSU
(does not include switching losses)
Reference Output Voltage
Reference Load Regulation
I_REF = 20µA
10µA < I_REF < 200µA
MIN TYP MAX UNITS
0.7
5.5
V
1.1
V
5
µA
400
µA
600
µA
650
µA
1.23
1.27
V
10
mV
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