MCP1257 Microchip Technology Inc., MCP1257 Datasheet - Page 9

• Manufacturer Part Number: MCP1257
• Description: Regulated 3.3v, Low-ripple Charge Pump With Low- Operating Current Sleep Mode Or Bypass Mode
• Manufacturer: Microchip Technology Inc.

TYPICAL PERFORMANCE CURVES (CONTINUED)
NOTE: Unless otherwise indicated, C
FIGURE 2-19:
Time - Normal 1.5x Mode.
FIGURE 2-20:
Time - SLEEP Mode.
FIGURE 2-21:
Time - SLEEP Mode.
© 2006 Microchip Technology Inc.
-0.01
-0.02
-0.03
-0.04
-0.05
-0.10
-0.15
-0.20
-0.05
-0.10
-0.15
-0.20
0.04
0.03
0.02
0.01
0.00
0.20
0.15
0.10
0.05
0.00
0.20
0.15
0.10
0.05
0.00
0
1
2
3
Output Voltage Ripple vs.
Output Voltage Ripple vs.
Output Voltage Ripple vs.
4
Time (μs)
Time (μs)
Time (μs)
5
6
IN
7
= C
I
OUT
I
OUT
I
8
OUT
V
OUT
V
= 100 mA
V
IN
= 10 mA
IN
IN
= 1 mA
= 2.4V
= 3.0V
= 2.4V
9
= 10 μF, C
10
1
= C
2
FIGURE 2-22:
Time - SLEEP Mode.
FIGURE 2-23:
Time - SLEEP Mode.
FIGURE 2-24:
Time - Mode Transition: SLEEP Mode-to-Normal
2x Mode-to-SLEEP Mode.
= 1 μF, I
8
7
6
5
4
3
2
1
0
-0.05
-0.10
-0.15
-0.20
-0.05
-0.10
-0.15
-0.20
0.20
0.15
0.10
0.05
0.00
0.20
0.15
0.10
0.05
0.00
OUT
= 10 mA, and T
MCP1256/7/8/9
Time (μs)
Output Voltage Ripple vs.
Output Voltage Ripple vs.
Output Voltage Ripple vs.
Time (μs)
Time (μs)
A
= +25°C.
I
OUT
V
IN
= 10 mA
DS21989A-page 9
= 2.4V
I
OUT
I
OUT
V
V
IN
IN
= 10 mA
= 1 mA
0.20
0.10
0.00
-0.10
-0.20
-0.30
-0.40
-0.50
-0.60
= 3.0V
= 3.0V