參數(shù)資料
型號(hào)： SC411
廠商： Semtech Corporation
英文描述： Synchronous Buck Pseudo-Fixed Frequency Power Supply Controller
中文描述： 同步降壓偽固定頻率電源控制器
文件頁(yè)數(shù)： 2/27頁(yè)
文件大?。?/td> 488K
代理商： SC411
2
2007 Semtech Corp.
www.semtech.com
SC411
POWER MANAGEMENT
Absolute Maximum Ratings
(1)
Exceeding the speci
fi
cations below may result in permanent damage to the device or device malfunction. Operation outside of the parameters
speci
fi
ed in the Electrical Characteristics section is not implied. Exposure to Absolute Maximum rated conditions for extended periods of time
may affect device reliability.
Test Conditions: V
BAT
= 15V, EN/PSV = 5V, VCCA = VDDP = 5V, V
OUT
=1.25V, R
TON
=
1M
Ω.
Parameter
Conditions
25°C
-40°C to 125°C
Units
Min
Typ
Max
Min
Max
Input Supplies
VCCA
5.0
4.5
5.5
V
VDDP
5.0
4.5
5.5
V
VBAT Voltage
Off-time > 800ns
1.8
25
V
VDDP Operating Current
FB > regulation point,
I
LOAD
= 0A
70
150
μ
A
VCCA Operating Current
FB > regulation point,
I
LOAD
= 0A
700
1100
μ
A
Notes:
1) This device is ESD sensitive. Use of standard ESD handling precautions is required.
2) Calculated from package in still air, mounted to 3” to 4.5”, 4 layer FR4 PCB with thermal vias under the exposed pad per JESD51
standards.
Parameter
Symbol
Maximum
Units
TON to VSSA
-0.3 to +25.0
V
DH, BST to PGND
-0.3 to +30.0
V
LX to PGND
-2.0 to +25.0
V
PGND to VSSA
-0.3 to +0.3
V
BST to LX
-0.3 to +6.0
V
DL, ILIM, VDDP to PGND
-
0.3 to +6.0
V
EN/PSV, FB, PGD, VCCA, VOUT to VSSA
-0.3 to +6.0
V
VCCA to EN/PSV, FB, PGD, VOUT
-0.3 to +6.0
V
Thermal Resistance Junction to Ambient
(2)
(2)
θ
JA
31
°C/W
Operating Junction Temperature Range
T
J
-40 to +125
°C
Storage Temperature Range
T
STG
-65 to +150
°C
IR Re
fl
ow (Soldering) 10s to 30s
T
PKG
260
°C
Electrical Characteristics
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