参数资料
型号: MAX8723ETE+T
厂商: Maxim Integrated Products
文件页数: 9/18页
文件大小: 0K
描述: IC REG FOR LCD DISPLAY 16-TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
应用: 转换器,LCD
输入电压: 6 V ~ 13.2 V
输出数: 1
输出电压: 3.3V,2 V ~ 3.6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 16-WQFN 裸露焊盘
供应商设备封装: 16-TQFN-EP(4x4)
包装: 带卷 (TR)
Low-Cost, Internal-Switch, Step-Down
Regulator for LCD Displays
Typical Operating Circuit
IN = 12V ± 10%
0.22 μ F
INL
VCC2
IN
VL = 5V/25mA
SHDN
VL
BST
0.1 μ F
C IN
1 μ F
VCC
LX
L
OUT = 3.3V/2A
GND
MAX8723
EP
CHS03
TOSHIBA
C OUT
PGND
0.22 μ F
V REF = 2V/50 μ A
REF
FSEL
I.C.
OUT
FB
EXT
Figure 1. Typical Operating Circuit, Fixed 3.3V Output
The typical operating circuit (Figure 1) is a complete
power supply that generates a +3.3V, 2A output from a
12V ±10% input. Tables 1 and 2 list the key compo-
nents and the contact information for the respective
suppliers. The inductor and capacitor component val-
Table 1. Component Selection
ues showing in Figure 1 are for 1.5MHz switching fre-
quency operation. For other operating frequencies
(500kHz/1MHz), substitute these values with the ones
from Table 1 corresponding to that frequency.
FREQUENCY
Inductor (L)
Input Capacitors (C IN )
Output Capacitor (C OUT)
500kHz
6.8μH
2 x 10μF, 16V ceramic
2 x 47μF, 6.3V ceramic
1MHz
3.9μH
10μF, 16V ceramic
47μF, 6.3V ceramic
1.5MHz
2.2μH, 3A Ferrite
Sumida CDRH5018NP-2R2NC
4.7μF, 16V ceramic
TDK C2012X5R1C475K
22μF, 6.3V X5R ceramic
TDK C2012X5R0J226M
Table 2. Component Suppliers
SUPPLIER
Fairchild Semiconductor
Sumida
TDK
Toshiba
PHONE
408-822-2000
847-545-6700
847-803-6100
949-455-2000
FAX
408-822-2102
847-545-6720
847-390-4405
949-859-3963
WEBSITE
www.fairchildsemi.com
www.sumida.com
www.component.tdk.com
www.toshiba.com/taec
_______________________________________________________________________________________
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