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參數(shù)資料
| 型號： | SC480IMLTRT |
| 廠商： | Semtech Corporation |
| 英文描述： | Complete DDR1/2/3 Memory Power Supply |
| 中文描述： | 完全DDR1/2/3內(nèi)存供電 |
| 文件頁數(shù)： | 4/25頁 |
| 文件大?。?/td> | 858K |
| 代理商： | SC480IMLTRT |
4
2006 Semtech Corp.
www.semtech.com
POWER MANAGEMENT
Electrical Characteristics (Cont.)
SC480
TEST CONDITIONS: V
IN
= 15V, VCCA = VDDP = VTTEN = EN/PSV = 5V, VDDQ = VTTIN = 1.8V, R
TON
= 1M
Ω
. T
AMB
= -40 TO +85C.
Parameter
Conditions
25°C
-40°C to 85°C
Units
Min
Typ
Max
Min
Max
Under-Voltage Fault Delay
FB Forced Below UV V
TH
8
clks
(3)
Under-Voltage Blank Time
From EN High
440
clks
(3)
Output Over-Voltage Fault
With Respect to FB Regulation Point
+16
+12
+20
%
Over-Voltage Fault Delay
FB Above Over-Voltage
Threshold
5
μ
s
PGD Low Output Voltage
Sink 1mA
0.1
V
PGD Leakage Current
FB in Regulation, PGD = 5V
1
μ
A
PGD UV Threshold
With Respect to FB Regulation Point
-10
-12
-8
%
PGD Fault Delay
FB Forced Outside PGD Window
5
μ
s
VCCA Under-Voltage (UVLO)
Falling Edge (Hysteresis 100 mV)
4
3.70
4.35
V
VTT Fault Protection
UV Lower Threshold
VTT w/rt REF
-12
-16
-8
%
OV Upper Threshold
VTT w/rt REF
+12
+8
+16
%
Fault Shutdown Delay
VTT Outside OV/UV Window
50
μ
s
Thermal Shutdown
(4)(5)
160
150
170
°C
Inputs/Outputs
Logic Input Low Voltage
EN/PSV Low/Low (Disabled)
1.2
V
VTTEN Low (VTT Disabled)
0.6
Logic Input High Voltage
EN/PSV Low/High
(Enabled, Psave Disabled)
1.2
2.4
V
VTTEN High (VTT Enabled)
2.4
Logic Input High Voltage
EN/PSV High/High
(Enabled, Psave Enabled)
3.1
V
EN/PSV Input Resistance
Sourcing
1.5
M
Ω
Sinking
1.0
M
Ω
VTTEN Leakage Current
-1
+1
μ
A
Soft-Start
VDDQ Soft-Start Ramp Time
EN/PSV High to PGD High
440
clks
(3)
VTT Soft-Start Ramp Rate
(6)
5.5
mV/
μ
s
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| SC4810B | High Performance Current Mode PWM Controller with Complementary Output, Programmable Delay |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SC4810B | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:High Performance Current Mode PWM Controller with Complementary Output, Programmable Delay |
| SC4810BIMLTRT | 制造商:Semtech Corporation 功能描述:Controller IC Leaded Process Compatible: |
| SC4810BITSTRT | 制造商:Semtech Corporation 功能描述:Controller IC |
| SC4810E | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:High Performance Current Mode PWM Controller with Complementary Output, Programmable Delay |
| SC4810EIMLTRT | 制造商:Semtech Corporation 功能描述:Controller IC Leaded Process Compatible: |
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