ncp1595 ON Semiconductor, ncp1595 Datasheet - Page 4

• Manufacturer Part Number: ncp1595
• Description: Current Mode Pwm Converter For Low Voltage Outputs
• Manufacturer: ON Semiconductor

PIN FUNCTION DESCRIPTIONS
NCP1595
NCP1595A
V
IN
Pin #
1
2
3
4
5
6
1
2
3
4
5
6
NC/EN
C1
VCC
FB
Symbol
VCCP
VCCP
GND
GND
VCC
VCC
NC
FB
FB
EN
LX
LX
Under Voltage
Over Voltage
Power Reset
Protection
Shutdown
Soft Start
Thermal
Logout
Feedback pin. Part is internally compensated. Only necessary to place a voltage divider or connect the out-
put directly to this pin.
Ground
Pin connected internally to power switch. Connect externally to inductor.
Power connection to the power switch.
IC power connection.
No Connection
Feedback pin. Part is internally compensated. Only necessary to place a voltage divider or connect the out-
put directly to this pin.
Ground
Pin connected internally to power switch. Connect externally to inductor.
Power connection to the power switch.
IC power connection.
Device Enable pin. This pin has an internal current source pull up. No connect is enable the device. With this
pin pulled down below 0.4 V, the device is disabled and enters the shutdown mode.
+
+
−
Figure 2. Detail Block Diagram
http://onsemi.com
Oscillator
−
+
4
Control Logic
Pin Description
+
−
VCCP
LX
GND
L1
R1
R2
V
to 0.9
OUT
C2
= 0.8 V
V
IN