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參數資料
| 型號： | NCP1406SNT1 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩壓器 |
| 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： | SC-59, SOT-23, TSOP-5 |
| 文件頁數： | 4/23頁 |
| 文件大小： | 224K |
| 代理商： | NCP1406SNT1 |
NCP1406
http://onsemi.com
4
DISSIPATION RATINGS
Package
Power Rating
@T
A
25 C
Derating Factor
@T
A
25 C
Power Rating
@T
A
= 70 C
Power Rating
@T
A
=
85 C
TSOP5
500 mW
4.0 mW/
°
C
320 mW
260 mW
ELECTRICAL CHARACTERISTICS
(V
OUT
= 25 V, T
A
= 40 C to +85 C for min/max values, typical values are at T
A
= 25 C, unless
otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
ON/OFF TIMING CONTROL
Minimum Off Time (V
DD
= 3.0 V, V
FB
= 0 V)
t
off
0.08
0.13
0.20
s
Maximum On Time (Current Not Asserted)
t
on
0.58
0.90
1.40
s
Maximum Duty Cycle
D
MAX
84
90
96
%
Minimum Startup Voltage (I
OUT
= 0 mA)
V
start
1.8
2.0
V
Minimum Startup Voltage Temperature Coefficient (T
A
= 40 to +85
°
C)
V
start
1.6
mV/
°
C
Minimum Hold Voltage (I
OUT
= 0 mA)
V
hold
1.7
1.9
V
SoftStart Time
t
SS
3.0
8.0
ms
LX (PIN 5)
Internal Switch Voltage (Note 4) (Note 5)
V
LX
26
V
LX Pin OnState Resistance (V
LX
= 0.4 V, V
DD
= 5.0 V)
R
sw(on)
0.7
Current Limit (When I
LX
reaches I
LIM
, the LX switch is turned off by the LX switch
protection circuit) (Note 5)
I
LIM
0.80
A
OffState Leakage Current (V
LX
= 26 V)
I
LKG
0.1
1.0
A
CE (PIN 1)
CE Input Voltage (V
DD
= 3.0 V, V
FB
= 0 V)
High State, Device Enabled
Low State, Device Disabled
V
CE(high)
V
CE(low)
0.9
0.3
V
V
CE Input Current
High State, Device Enabled (V
DD
= V
CE
= 5.5 V)
Low State, Device Disabled (V
DD
= 5.5 V, V
CE
= V
FB
= 0 V)
I
CE(high)
I
CE(low)
500
10
150
500
nA
nA
TOTAL DEVICE
Supply Voltage
V
DD
1.4
5.5
V
Undervoltage Lockout (V
DD
Falling)
V
UVLO
1.0
1.3
V
Feedback Voltage
T
A
= 25
°
C
T
A
= 40 to +85
°
C
V
FB
1.178
1.170
1.190
1.190
1.202
1.210
V
Feedback Pin Bias Current (V
FB
= 1.19 V)
I
FB
15
45
nA
Operating Current 1 (V
FB
= 0 V, V
DD
= V
CE
= 3.0 V, Maximum Duty Cycle)
I
DD1
0.7
1.5
mA
Operating Current 2 (V
DD
= V
CE
= V
FB
= 3.0 V, Not Switching)
I
DD2
15
25
A
OffState Current (V
DD
= 5.0 V, V
CE
= 0 V)
I
OFF
0.3
1.3
A
Thermal Shutdown (Note 5)
T
SD
140
°
C
Thermal Shutdown Hysteresis (Note 5)
T
SDHYS
10
°
C
4. Recommended maximum V
OUT
up to 25 V.
5. Guaranteed by design, not tested.
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