UZXYY ANALOGICTECH [Advanced Analogic Technologies], UZXYY Datasheet - Page 2

• Manufacturer Part Number: UZXYY
• Description: PCMCIA Current Limit Interface and Capacitor Charger
• Manufacturer: ANALOGICTECH [Advanced Analogic Technologies]

Pin Descriptions
Pin Configuration
2
4, 5, 6
Pin #
7, 8
10
11
12
1
2
3
9
Symbol
ISETU
ISETL
RHYS
EN IU
EN IL
GND
VCC
OUT
RDY
Function
Enable input. Active low enable with internal pull up. Also switches in the higher current limit
to allow the System to start functioning. Can be directly connected to System Ready for
automatic enabling. When both EN IL and EN IU are enabled, I
Enable input. Active low enable with internal pull up. Also switches in the lower current limit
initiating the super capacitor to start charging.
Device ground connection.
Input pins to the P-channel MOSFET source. Connect 1µF capacitor from VCC to GND.
P-channel MOSFET drain connection. Connect to super capacitor from OUT to GND.
Lower current-limit set input. A resistor from ISETL to ground sets the maximum lower cur-
rent limit for the switch. Current limit can be set between 100mA and 1200mA.
Upper current limit set input. A resistor from ISETU to ground sets the maximum upper cur-
rent limit for the switch. Current limits can be set between 100mA and 1200mA. Connect to
ground to disable current limit.
System READY hysteresis. Connect a resistor to ground to set the System Ready com-
parator hysteresis.
System ready pin. Open drain, active low, initiated when the capacitor is 98% charged.
EN IU
EN IL
GND
VCC
VCC
VCC
1
2
3
4
5
6
TSOPJW-12
(Top View)
12
11
10
9
8
7
PCMCIA Current Limit Interface
RDY
RHYS
ISETU
ISETL
OUT
OUT
and Capacitor Charger
SETU
will be selected.
AAT4620
4620.2007.04.1.1