NCP1521BSNT1G ON Semiconductor, NCP1521BSNT1G Datasheet - Page 3

• Manufacturer Part Number: NCP1521BSNT1G
• Description: IC CONV DC-DC STEPDOWN SOT23-5
• Manufacturer: ON Semiconductor
• Type: Step-Down (Buck)r

Specifications of NCP1521BSNT1G

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.9 ~ 3.9 V
• Current - Output: 600mA
• Frequency - Switching: 1.5MHz
• Voltage - Input: 2.7 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: TSOT-23-5, TSOT-5, TSOP-5
• Mounting Style: SMD/SMT
• Duty Cycle (max): 100 %
• Efficiency: 90 %
• Input / Supply Voltage (max): 3.9 V
• Output Current: 600 mA
• Output Voltage: 3.3 V
• Switching Frequency: 1.5 MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: NCP1521BSNT1GOSTR

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. Maximum electrical ratings are defined as those values beyond which damage to the device may occur at T
2. According to JEDEC standard JESD22−A108B.
3. This device series contains ESD protection and exceeds the following tests:
4. Latchup current maximum rating per JEDEC standard: JESD78.
5. JEDEC Standard: J−STD−020A.
PIN FUNCTION DESCRIPTION
MAXIMUM RATINGS
Moisture Sensitivity Level (Note 5)
Pin No.
TSOP5
Minimum Voltage All Pins
Maximum Voltage All Pins (Note 2)
Maximum Voltage EN, FB, LX
Thermal Resistance, Junction −to−Air
Operating Ambient Temperature Range
Storage Temperature Range
Junction Operating Temperature
Latch−up Current Maximum Rating (T
ESD Withstand Voltage (Note 3)
(with Recommended Soldering Footprint)
Human Body Model
Machine Model
Human Body Model (HBM) per JEDEC standard: JESD22−A114.
Machine Model (MM) per JEDEC standard: JESD22−A115.
1
2
3
4
5
Figure 5. Pin Connections − TSOP5
Pin No.
UDFN6
2, 4
3
1
6
5
GND
VIN
EN
1
2
3
Pin Name
(Top View)
GND
VIN
EN
FB
LX
Rating
A
5
4
= 85°C) (Note 4)
Power Ground
Analog Output
Analog Input
LX
FB
Power Input
Digital Input
Analog /
Analog /
Type
PIN CONNECTIONS
http://onsemi.com
Power supply input for the PFET power stage, analog and digital blocks. The
pin must be decoupled to ground by a 4.7 mF ceramic capacitor.
This pin is the GND reference for the NFET power stage and the analog sec-
tion of the IC. The pin must be connected to the system ground.
Enable for switching regulators. This pin is active HIGH and is turned off by
logic LOW on this pin. Do not let this pin float.
Feedback voltage from the output of the power supply. This is the input to the
error amplifier.
Connection from power MOSFETs to the Inductor.
3
UDFN6
TSOP5
Figure 6. Pin Connections − UDFN6
Symbol
GND
V
V
R
V
V
MSL
T
VIN
T
Lu
max
max
EN
T
esd
min
qJA
stg
A
j
Description
1
2
3
6
5 LX
4
−55 to 150
−40 to 125
VIN + 0.3
−40 to 85
A
$100
Value
−0.3
= 25°C.
300
260
200
7.0
FB
GND
2.0
1
per IPC
°C/W
Unit
mA
kV
°C
°C
°C
V
V
V
V