Datasheet

Data Sheet ADP1607
Rev. C | Page 7 of 16
30
27
24
21
18
15
1.8 2.3
2.8
3.3
NONSWITCHING VOUT QUIESCENT CURRENT (µA)
INPUT VOLTAGE (V)
T
A
= –40°C
T
A
= +25°C
T
A
= +45°C
T
A
= +85°C
10276-009
Figure 9. Nonswitching PFM Mode Quiescent Current vs. Input Voltage
5
4
3
2
1
0
0.9 1.4 1.9 2.4 2.9
SHUTDOWN CURRENT (µA)
INPUT VOLTAGE (V)
T
A
= –40°C
T
A
= +25°C
T
A
= +45°C
T
A
= +90°C
10276-010
Figure 10. Shutdown Current vs. Input Voltage
170
155
140
125
110
95
1.8 2.3
2.8 3.3
NMOS R
DSON
(mΩ)
OUTPUT VOLTAGE (V)
T
A
= –40°C
T
A
= +25°C
T
A
= +90°C
I
SW
= 500mA
10276-011
Figure 11. NMOS Drain-to-Source On Resistance
270
240
210
180
150
120
1.8 2.3 2.8
3.3
PMOS R
DSON
(mΩ)
OUTPUT VOLTAGE (V)
T
A
= –40°C
T
A
= +25°C
T
A
= +90°C
I
SW
= 500mA
10276-012
Figure 12. PMOS Drain-to-Source On Resistance
1200
1100
1000
900
800
700
0.8 1.3
1.8 2.3 2.8
3.3
CURRENT LIMIT (mA)
INPUT VOLTAGE (V)
V
OUT
= 1.8 V
V
OUT
= 2.5V
V
OUT
= 3.3V
10276-013
Figure 13. Switch Current Limit vs. Input Voltage
140
120
100
80
60
40
20
0
0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2
LOAD CURRENT (mA)
INPUT VOLTAGE (V)
V
OUT
= 2.5V
PWM OPERATION
PFM OPERATION
10276-014
Figure 14. Auto Mode Transition Thresholds