NCP1575D ON Semiconductor, NCP1575D Datasheet - Page 6

• Manufacturer Part Number: NCP1575D
• Description: IC CTLR SYNCH BUCK LV 8-SOIC
• Manufacturer: ON Semiconductor
• Type: Step-Down (Buck)r

Specifications of NCP1575D

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: Adj to 0.98V
• Frequency - Switching: 200kHz, programmable
• Voltage - Input: 9 ~ 20 V
• Operating Temperature: 0°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Current - Output: -
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PACKAGE PIN DESCRIPTION
COMP
PIN #
GND
V
V
1
2
3
4
5
6
7
8
CC
FB
PIN SYMBOL
GATE(H)
GATE(L)
COMP
R
+
− 0.98 V
GND
V
V
0.465 V
NC
OSC
Error Amp
CC
FB
− +
+
−
−
+
8.5 V/7.5 V
−
+
UVLO Comp
Power supply input.
Frequency adjust pin. If not used, oscillator frequency is nominally 200 kHz. Connecting R
through a single resistor will increase oscillator frequency.
No connect.
Error amp output. PWM comparator reference input. A capacitor to LGND provides error amp compensa-
tion and Soft−Start. Pulling pin < 0.415 V locks gate outputs to a zero percent duty cycle state.
High−side switch FET driver pin. Capable of delivering peak currents of 1.5 A.
Low−side synchronous FET driver pin. Capable of delivering peak currents of 1.5 A.
Error amplifier and PWM comparator input.
Power supply return.
+
− 0.25 V
S
−
+
−
+
PWM Comp
Oscillator
200 kHz
UVLO Latch
Dominant
Figure 4. Block Diagram
S
R
Set
http://onsemi.com
Q
NCP1575
6
PWM Latch
Dominant
R
S
Reset
FUNCTION
Q
Frequency
Adjust
Nonoverlap
V
V
OSC
CC
CC
to ground
GATE(H)
GATE(L)
NC
R
OSC