Datasheet

ADP1607 Data Sheet
Rev. C | Page 8 of 16
88.4
88.0
87.6
87.2
86.8
86.4
1.8 2.3 2.8 3.3
MAXIMUM DUTY CYCLE (%)
OUTPUT VOLTAGE (V)
T
A
= –40°C
T
A
=+25°C
T
A
=+90°C
10276-015
Figure 15. Maximum Duty Cycle vs. Output Voltage
2.04
2.02
2.00
1.98
1.96
1.94
–40 –10 20 50 80
FREQUENCY (MHz)
TEMPERATURE (°C)
V
OUT
= 1.8V
V
OUT
= 3.3V
V
OUT
= 2.5V
10276-016
Figure 16. Frequency vs. Temperature
1000
800
600
400
200
900
700
500
300
100
0
0.8 1.3 1.8 2.3 2.8 3.3
MAXIMUM OUTPUT CURRENT (mA)
INPUT VOLTAGE (V)
V
OUT
= 1.8 V
V
OUT
= 2.5V
V
OUT
= 3.3V
10276-017
Figure 17. Maximum Output Current vs. Input Voltage
TIME (200µs/DIV)
V
IN
= 1.2V
V
OUT
= 3.3V
I
LOAD
= 1mA TO 50mA
LOAD CURRENT
(50mA/DIV)
OUTPUT VOLTAGE (100mV/DIV)
AC-COUPLED
10276-018
1
4
Figure 18. PFM Mode Load Transient Response (Auto Mode Part)
TIME (200µs/DIV)
V
IN
= 1.2V
V
OUT
= 3.3V
I
LOAD
= 50mA TO 100mA
LOAD CURRENT
(50mA/DIV)
OUTPUT VOLTAGE (100mV/DIV)
AC-COUPLED
10276-019
1
4
Figure 19. PWM Mode Load Transient Response (Fixed PWM Mode Part)
TIME (200µs/DIV)
V
IN
= 1.2V
V
OUT
= 3.3V
R
LOAD
= 3.3kΩ
EN PIN VOLTAGE
(1V/DIV)
INDUCTOR
CURRENT
(200mA/DIV)
SW PIN VOLTAGE
(2V/DIV)
OUTPUT VOLTAGE
(1V/DIV)
10276-020
1
4
3
2
Figure 20. Startup, R
LOAD
=3.3 kΩ