MAX662A Maxim, MAX662A Datasheet - Page 3

• Manufacturer Part Number: MAX662A
• Description: +12V / 30mA Flash Memory Programming Supply
• Manufacturer: Maxim

_____________________Pin Description
(Circuit of Figure 3a, T
_____________________________Typical Operating Characteristics (continued)
PIN
1
2
3
4
5
6
7
8
0mA
A: OUTPUT CURRENT, 20mA/div, I
B: OUTPUT VOLTAGE RIPPLE, 100mV/div, V
NAME
SHDN
V
GND
C1+
C2+
V
C1-
C2-
OUT
CC
LOAD-TRANSIENT RESPONSE
_______________________________________________________________________________________
A
Negative terminal for the first charge-
pump capacitor
Positive terminal for the first charge-
pump capacitor
Negative terminal for the second
charge-pump capacitor
Positive terminal for the second
charge-pump capacitor
Supply Voltage
+12V Output Voltage. V
when in shutdown mode.
Ground
Active-high CMOS-logic level
Shutdown Input. SHDN is internally
pulled up to V
normal operation. In shutdown mode,
the charge pumps are turned off and
V
= +25°C, unless otherwise noted.)
OUT
1ms/div
= V
CC
OUT
.
FUNCTION
CC
= 0mA to 30mA
. Connect to GND for
CC
= 5.0V
OUT
= V
A
B
CC
+12V, 30mA Flash Memory
Figure 1. Block Diagram
0.22 F
0.22 F
V
CC
* C3 NOT REQUIRED. FOR MAX662 ONLY.
Programming Supply
SWITCH CLOSURES SHOWN FOR CHARGE PUMP IN THE TRANSFER MODE
0V
0V
C2+
C1+
C2-
C1-
4.7 F
A: SUPPLY VOLTAGE, 2V/div, V
B: OUTPUT VOLTAGE RIPPLE, 200mV/div
C4
S1
S1
S1
S1
LINE-TRANSIENT RESPONSE
S2
S2
S2
1ms/div
GND
OSCILLATOR
V
CC
CC
ERROR
AMP
= 4.5V to 5.5V, I
VREF
MAX662A
OUT
= 30mA
R2
R1
V
SHDN
A
B
OUT
C3*
0.1 F
C5
4.7 F
+12V
3