MAX1595_09 Datasheet, PDF (3/7 Pages) Maxim Integrated Products – Regulated 3.3V/5.0V Step-Up/Step-Down Charge Pump

Regulated 3.3V/5.0V Step-Up/Step-Down
Charge Pump
__________________________________________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.)
10000
1000
100
10
NO LOAD SUPPLY CURRENT
vs. SUPPLY VOLTAGE
OUTPUT WAVEFORM
MAX1595 toc02
1
0.1
0
100
90
80
70
60
50
40
30
20
10
0
1
V_OUT = 5V
1
2
3
4
56
SUPPLY VOLTAGE (V)
3V EFFICIENCY
vs. LOAD CURRENT
V_IN = 1.8V
V_IN = 2.4V
10
100
LOAD CURRENT (mA)
V_OUT = 5V
200ns/div
OUTPUT WAVEFORM. AC-COUPLED.
V_IN = 3.6V, I_LOAD = 100mA, C_OUT = 1μF
5V EFFICIENCY
vs. LOAD CURRENT
100
90
V_IN = 3V
80
70
60
V_IN = 3.3V
50
V_IN = 3.6V
40
30
20
10
0
0.1
1
10
100
1000
LOAD CURRENT (mA)
LINE-TRANSIENT RESPONSE
MAX1595 toc07
A
LOAD-TRANSIENT RESPONSE
MAX1595 toc08
A
5.06
5.04
5.02
5.00
4.98
4.96
4.94
4.92
4.90
1
OUTPUT VOLTAGE
vs. LOAD CURRENT
V_IN = 3.3V
V_IN = 3.6V
V_IN = 3V
V_OUT = 5V
10
100
1000
LOAD CURRENT (mA)
SHUTDOWN TIMING
MAX1595 toc06
5V
A
B
100μs/div
A: OUTPUT VOLTAGE: R_L = 100Ω, 2V/div
B: SHDN VOLTAGE: 2V/div
OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
6
V_OUT = 5V, I_LOAD = 125mA
5
4
V_OUT = 3.3V, I_LOAD = 75mA
3
B
2ms/div
A: INPUT VOLTAGE: V_IN = 3.1V TO 3.6V, 500mV/div
B: OUTPUT VOLTAGE: I_LOAD = 50mA, 100mV/div
B
C_OUT = 1μF
200μs/div
A: LOAD CURRENT: I_LOAD = 5mA to 95mA, 100mA/div
B: OUTPUT VOLTAGE: AC-COUPLED 100mV/div
2
1
0
0
1
2
3
4
5
6
SUPPLY VOLTAGE (V)
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