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參數(shù)資料
| 型號(hào)： | NCP1406SNT1G |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | 25 V/25 mA PFM Step−Up DC−DC Converter |
| 中文描述： | 1.5 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封裝： | LEAD FREE, SC-59, SOT-23, TSOP-5 |
| 文件頁(yè)數(shù)： | 3/23頁(yè) |
| 文件大?。?/td> | 224K |
| 代理商： | NCP1406SNT1G |
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NCP1406
http://onsemi.com
3
Figure 4. Representative Block Diagram
LX
PFM ON/OFF
Timing
Control
Driver
+
TSD
FB Fault
Protection
VDD
UVLO
+
Vref
SoftStart
PFM
Comparator
CE
GND
FB
PIN FUNCTION DESCRIPTION
Pin
Symbol
Description
1
CE
Chip Enable Pin
(1) The chip is enabled if a voltage which is equal to or greater than 0.9 V is applied.
(2) The chip is disabled if a voltage which is less than 0.3 V is applied.
(3) The chip will be enabled if it is left floating.
2
FB
PFM comparator inverting input, and is connected to offchip resistor divider which sets output voltage.
3
VDD
Power supply pin for internal circuit.
4
GND
Ground pin.
5
LX
External inductor connection pin.
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Power Supply Voltage (Pin 3)
VDD
0.3 to 6.0
V
Input/Output Pin
LX (Pin 5)
LX Peak Sink Current
FB (Pin 2)
V
LX
I
LX
V
FB
0.3 to 27
1.5
0.3 to 6.0
V
A
V
CE (Pin 1)
Input Voltage Range
V
CE
0.3 to 6.0
V
Power Dissipation and Thermal Characteristics
Maximum Power Dissipation @ T
A
= 25 C
Thermal Resistance, JunctiontoAir
P
D
R
JA
500
250
mW
C/W
Operating Ambient Temperature Range
T
A
40 to +85
C
Operating Junction Temperature Range
T
J
40 to +150
C
Storage Temperature Range
T
stg
55 to +150
C
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values
(not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage
may occur and reliability may be affected.
1. This device series contains ESD protection and exceeds the following tests:
Human Body Model (HBM)
2.0 kV per JEDEC standard: JESD22A114 for all pins.
Machine Model (MM)
200 V per JEDEC standard: JESD22A115 for all pins.
2. Latchup Current Maximum Rating:
150 mA per JEDEC standard: JESD78.
3. Moisture Sensitivity Level (MSL): 1 per IPC/JEDEC standard: JSTD020A.
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