NCV5171EDR2G ON Semiconductor, NCV5171EDR2G Datasheet - Page 4

• Manufacturer Part Number: NCV5171EDR2G
• Description: IC REG BOOST 1.5A 280KHZ 8-SOIC
• Manufacturer: ON Semiconductor
• Type: Step-Up (Boost), Inverting, Flyback, Forward Converter, Sepicr

Specifications of NCV5171EDR2G

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Current - Output: 1.5A
• Frequency - Switching: 280kHz
• Voltage - Input: 2.7 ~ 30 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Mounting Style: SMD/SMT
• Operating Temperature Range: - 40 C to + 150 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

ELECTRICAL CHARACTERISTICS
PACKAGE PIN DESCRIPTION
Power Switch
General
3. Guaranteed by design, not 100% tested in production.
Switch Saturation Voltage
Switch Current Limit
Minimum Pulse Width
DI
Switch Leakage
Operating Current
Shutdown Mode Current
Minimum Operation Input Voltage
Thermal Shutdown
Thermal Hysteresis
Package
CC
Pin #
/ DIV
1
2
3
4
5
6
7
8
SW
Characteristic
Symbol
AGND
PGND
V
V
Test
Pin
V
FB
SS
SW
CC
C
Loop compensation pin. The V
current limit and soft start. Loop compensation can be implemented by a simple RC network as shown in the
application diagram on page 2 as R1 and C1.
Positive regulator feedback pin. This pin senses a positive output voltage and is referenced to 1.276 V. When
the voltage at this pin falls below 0.4 V, chip switching frequency reduces to 20% of the nominal frequency.
These pins are connected to internal test logic and should either be left floating or tied to ground. Connection
to a voltage between 2 V and 6 V shuts down the internal oscillator and leaves the power switch running.
Synchronization and shutdown pin. This pin may be used to synchronize the part to nearly twice the base
frequency. A TTL low will shut the part down and put it into low current mode. If synchronization is not used,
this pin should be either tied high or left floating for normal operation.
Input power supply pin. This pin supplies power to the part and should have a bypass capacitor connected to
AGND.
Analog ground. This pin provides a clean ground for the controller circuitry and should not be in the path of
large currents. The output voltage sensing resistors should be connected to this ground pin. This pin is
connected to the IC substrate.
Power ground. This pin is the ground connection for the emitter of the power switching transistor. Connection
to a good ground plane is essential.
High current switch pin. This pin connects internally to the collector of the power switch. The open voltage
across the power switch can be as high as 40 V. To minimize radiation, use a trace as short as practical.
(2.7 V< V
I
I
I
I
50% duty cycle, (Note 3)
80% duty cycle, (Note 3)
FB = 0 V, I
2.7 V ≤ V
12 V < V
2.7 V ≤ V
12 V < V
V
I
V
V
V
(Note 3)
(Note 3)
SWITCH
SWITCH
SWITCH
SWITCH
SW
CC
SW
C
C
SW
< 0.8 V, SS = 0 V, 2.7 V ≤ V
< 0.8 V, SS = 0 V, 12 V ≤ V
= 0
< 30 V; −40°C < T
= 40 V, V
switching, maximum I
http://onsemi.com
= 1.5 A, (Note 3)
= 1.0 A, 0°C ≤ T
= 1.0 A, −40°C ≤ T
= 10 mA
CC
CC
C
CC
CC
SW
pin is the output of the error amplifier and is used for loop compensation,
≤ 30 V, 10 mA ≤ I
≤ 30 V, 10 mA ≤ I
≤ 12 V, 10 mA ≤ I
≤ 12 V, 10 mA ≤ I
= 4.0 A, (Note 3)
CC
Test Conditions
= 0V
4
J
< 125°C unless otherwise stated.)
J
≤ 85°C
SW =
J
Function
≤ 0°C
SW
SW
SW
SW
CC
CC
10 mA
≤ 1.0 A
≤ 1.5 A, (Note 3)
≤ 1.0 A
≤ 1.5 A, (Note 3)
≤ 30 V
≤ 12 V
Min
200
150
1.6
1.5
−
−
−
−
−
−
−
−
−
−
−
−
−
−
0.55
0.75
0.09
2.45
Typ
250
180
0.8
1.9
1.7
2.0
5.5
10
17
12
25
−
−
−
0.45
2.70
Max
300
100
100
100
100
210
1.4
2.4
2.2
8.0
30
30
60
−
−
−
mA/A
mA/A
mA/A
mA/A
Unit
mA
mA
mA
°C
°C
ns
V
V
V
V
A
A
V