Typical operating characteristics – Rainbow Electronics MAX1595 User Manual
Page 3
MAX1595
Regulated 3.3V/5.0V Step-Up/Step-Down
Charge Pump
_______________________________________________________________________________________
3
__________________________________________Typical Operating Characteristics
(Circuit of Figure 4, V
IN
= 2V for MAX1595_ _ _33, V
IN
= 3V for MAX1595_ _ _50, T
A
= +25°C, unless otherwise noted.)
0.1
10
1
1000
100
10000
0
2
1
3
4
5
NO LOAD SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX1595 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (
µ
A)
6
V
OUT
= 5V
200ns/div
OUTPUT WAVEFORM
50mV/div
MAX1595 toc02
OUTPUT WAVEFORM. AC-COUPLED.
V
IN
= 3.6V, I
LOAD
= 100mA, C
OUT
= 1
µF
V
OUT
= 5V
4.90
5.00
4.98
4.96
4.94
4.92
5.06
1
10
100
1000
OUTPUT VOLTAGE
vs. LOAD CURRENT
MAX1595 toc03
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)
5.04
5.02
V
IN
= 3V
V
IN
= 3.6V
V
IN
= 3.3V
V
OUT
= 5V
100
0
1
10
100
3V EFFICIENCY
vs. LOAD CURRENT
20
10
MAX1595 toc04
LOAD CURRENT (mA)
EFFICIENCY (%)
40
30
60
70
50
80
90
V
IN
= 1.8V
V
IN
= 2.4V
2ms/div
LINE-TRANSIENT RESPONSE
MAX1595 toc07
A: INPUT VOLTAGE: V
IN
= 3.1V TO 3.6V, 500mV/div
B: OUTPUT VOLTAGE: I
LOAD
= 50mA, 100mV/div
A
B
100
0
0.1
1
10
100
1000
5V EFFICIENCY
vs. LOAD CURRENT
20
MAX1595 toc05
LOAD CURRENT (mA)
EFFICEINCY (%)
40
60
80
70
50
30
10
90
V
IN
= 3.6V
V
IN
= 3.3V
V
IN
= 3V
100
µs/div
SHUTDOWN TIMING
MAX1595 toc06
A: OUTPUT VOLTAGE: R
L
= 100
Ω, 2V/div
B: SHDN VOLTAGE: 2V/div
A
5V
B
200
µs/div
LOAD-TRANSIENT RESPONSE
MAX1595 toc08
A: LOAD CURRENT: I
LOAD
= 5mA to 95mA, 100mA/div
B: OUTPUT VOLTAGE: AC-COUPLED 100mV/div
A
B
C
OUT
= 1
µF
1
0
2
4
3
5
6
0
2
1
3
4
5
6
OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
MAX1595 toc09
SUPPLY VOLTAGE (V)
OUTPUT VOLTAGE (V)
V
OUT
= 5V, I
LOAD
= 125mA
V
OUT
= 3.3V, I
LOAD
= 75mA