MAX1565ETJ-T Maxim Integrated Products, MAX1565ETJ-T Datasheet - Page 8

• Manufacturer Part Number: MAX1565ETJ-T
• Description: DC/DC Switching Converters 5Ch Digital Camera Power Supply
• Manufacturer: Maxim Integrated Products

Small, High-Efficiency, Five-Channel
Digital Still Camera Power Supply
(Circuit of Figure 1, T
8
1.249
1.248
1.247
1.246
1.245
1.244
1.243
1.242
1.241
1.240
_______________________________________________________________________________________
-50
-25
REFERENCE VOLTAGE
vs. TEMPERATURE
TEMPERATURE (°C)
0
0V
0V
0V
0A
88
87
86
85
84
83
82
81
80
A
0
= +25°C, unless otherwise noted.)
WHEN THIS DUTY CYCLE IS EXCEEDED FOR
100,000 CLOCK CYCLES, THE MAX1565
SHUTS DOWN
25
BUCK-BOOST STARTUP RESPONSE
100 200 300
AUX_ MAXIMUM DUTY CYCLE
50
vs. FREQUENCY
FREQUENCY (kHz)
400
75
4ms/div
C
OSC
500 600
100
= 100pF
700
V
V
OUTSU
OUTSD
V
800
1.251
1.250
1.249
1.248
1.247
1.246
1.245
1.244
IN
MAX1565 toc17
Typical Operating Characteristics (continued)
= 3.3V
= 1.5V
= 2.5V
900
0
1000
ONSD = ONSU
5V/div
OUTSU
1V/div
OUTSD
500mA/div
I
200mA/div
vs. REFERENCE LOAD CURRENT
OUTSD
REFERENCE LOAD CURRENT (µA)
50
REFERENCE VOLTAGE
100
150
0V
0V
0A
0V
0V
0A
0A
200
STEP-UP STARTUP RESPONSE
250
AUX_ STARTUP RESPONSE
900
800
700
600
500
400
300
200
100
100µs/div
2ms/div
0
1
OSCILLATOR FREQUENCY vs. R
V
V
OUTSO
IN
V
V
= 2V
OUT1
IN
MAX1565 toc16
MAX1565 toc18
= 2.5V
10
= 3.3V
= 5V
R
OSC
ON1
5V/div
OUT1
2V/div
I
200mA/div
ONSU
5V/div
OUTSU
2V/div
I
100mA/div
I
1A/div
(kΩ)
OUTSU
IN
OUT
1
100
C
C
C
C
OSC
OSC
OSC
OSC
= 470pF
= 220pF
= 100pF
= 47pF
OSC
1000