NCP1595, NCP1595A

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4

PIN FUNCTION DESCRIPTIONS

Pin #

Symbol

Pin Description

NCP1595

1

FB

Feedback pin. Part is internally compensated. Only necessary to place a voltage divider or connect the out-

put directly to this pin.

2

GND

Ground

3

LX

Pin connected internally to power switch. Connect externally to inductor.

4

VCCP

Power connection to the power switch.

5

VCC

IC power connection.

6

NC

No Connection

NCP1595A

1

FB

Feedback pin. Part is internally compensated. Only necessary to place a voltage divider or connect the out-

put directly to this pin.

2

GND

Ground

3

LX

Pin connected internally to power switch. Connect externally to inductor.

4

VCCP

Power connection to the power switch.

5

VCC

IC power connection.

6

EN

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.

−

+

−

+

−

+

Power Reset

Under Voltage

Logout

Thermal

Shutdown

Control Logic

Oscillator

L1

C2

R1

R2

Soft Start

VCC

VCCP

NC/EN

FB

LX

GND

C1

Over Voltage

Protection

+

Figure 2. Detail Block Diagram

to 0.9