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| 型号： | MAX8632ETI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 5/29页 |
| 文件大小： | 0K |
| 描述： | IC PWR SUPPLY DDR 28-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 控制器，DDR |
| 输入电压： | 2 V ~ 28 V |
| 输出数： | 1 |
| 输出电压： | 1.8V，2.5V，0.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 供应商设备封装： | 28-TQFN-EP（5x5） |
| 包装： | 带卷 (TR) |
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Integrated DDR Power-Supply Solution for
Desktops, Notebooks, and Graphic Cards
ELECTRICAL CHARACTERISTICS (continued)
(V IN = +15V, V DD = AV DD = V SHDN = STBY = V BST = V ILIM = 5V, V OUT = V REFIN = V VTTI = 2.5V, UVP/OVP = TP0 = FB = SKIP
= GND, PGND1 = PGND2 = LX = GND, TON = OPEN, V VTTS = V VTT , T A = -40°C to +85°C, unless otherwise noted. Typical values
are at T A = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
LINEAR REGULATORS (VTTR AND VTT)
VTTI Input Voltage Range
V VTTI
1
2.8
V
VTTI Supply Current
VTTI Shutdown Current
I VTTI
I VTT = I VTTR = 0
SHDN = GND
<0.1
1
10
mA
μA
REFIN Input Impedance
REFIN Range
VTT, VTTR UVLO Threshold
(Measured at OUT)
Soft-Start Charge Current
VTT Internal MOSFET High-Side
On-Resistance
VTT Internal MOSFET Low-Side
On-Resistance
VTT Output Accuracy
(Referred to V REFIN / 2)
VTT Load Regulation
VTT Current Limit
V REFIN
I SS
V REFIN = 2.5V
V SS = 0
I VTT = -100mA, V VTTI = 1.5V,
AV DD = 4.5V
I VTT = 100mA, AV DD = 4.5V
V REFIN = 1.5V or 2.5V, I VTT = 1mA
V REFIN = 2.5V, I VTT = 0 to ± 1.5A
V REFIN = 1.5V, I VTT = 0 to ± 1A
VTT = 0 or VTTI
12
1
0.01
-1
±3
20
0.1
4
1.3
1.3
±5
30
2.8
0.20
0.3
0.3
+1
±6.5
k ?
V
V
μA
?
?
%
%
A
VTTS Input Current
VTTR Output Error
(Referred to V REFIN / 2)
I VTTS
V VTTS = 1.5V, VTT open
V REFIN = 1.5V or 2.5V, I VTTR = 0
-1
0.1
1
+1
μA
%
VTTR Current Limit
VTTR Bias Current
V VTTR = 0 or V VTTI
V REFIN = V VTTI = 0
±18
±32
0.6
±50
4
mA
μA
Note 1: Specifications to -40°C are guaranteed by design, not production tested.
Note 2: When the inductor is in continuous conduction, the output voltage has a DC regulation level higher than the error-compara-
tor threshold by 50% of the ripple. In discontinuous conduction, the output voltage has a DC regulation level higher than the
trip level by approximately 1.5% due to slope compensation.
Note 3: On-time and off-time specifications are measured from 50% point to 50% point at the DH pin with LX = GND, V BST = 5V,
and a 250pF capacitor connected from DH to LX. Actual in-circuit times may differ due to MOSFET switching speeds.
_______________________________________________________________________________________
5
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