参数资料
型号: ISL8112IRZ-T
厂商: Intersil
文件页数: 13/27页
文件大小: 0K
描述: IC REG DL BCK/LINEAR SYNC 32-QFN
标准包装: 6,000
拓扑: 降压(降压)同步(1),线性(LDO)(1)
功能: 任何功能
输出数: 2
频率 - 开关: 可调式
电压/电流 - 输出 1: 控制器
电压/电流 - 输出 2: 0.7 V ~ 4.5 V,200mA
带 LED 驱动器:
带监控器:
带序列发生器:
电源电压: 4.5 V ~ 25 V
工作温度: -40°C ~ 100°C
安装类型: 表面贴装
封装/外壳: 32-VFQFN 裸露焊盘
供应商设备封装: 32-QFN(5x5)
包装: 带卷 (TR)
ISL8112
VIN: 5.5V to 25V
5V
C5
1μF
C8
1μF
C10
PVCC
VIN
VCC
LDO
LDOREF
NC
GND
C1
10μF
BOOT1
BOOT2
10μF
L1: 3.3μH
SI4816BDY
OUT1 – PCI-e
1.25V/5A
C11
330μF
9m Ω
6.3V
Q3a
Q3b
C9
0.1μF
UG1
PH1
LG1
VSEN1
UG2
PH2
LG2
PGND
C4
0.22μF
Q1
IRF7821
OUT2-GFX
L2: 2.2μH TRACK OUT2REF/10A
Q2
C2
IRF7832
2 x 330μF
4m Ω
6.3V
R1
7.87k Ω
VCC
EN1
VSEN2
OUT2REF: DYNAMIC 0 TO 2.5V
R5
C3
R4
200k Ω
R2
10k Ω
5V
FB1 TIED TO GND = 5V
FB1 TIED TO VCC = 1.5V
R3
200k Ω
GND
BYP
FB1
AGND
ILIM1
MODE
EN_LDO
ISL8112
EN2
OUT2REF
ILIM2
VREF2
VREF1
VCC 2 BITS
OUT2REF TIED TO VREF2 = 1.05V
OUT2REF TIED TO VCC = 3.3V +
200k Ω
VCC VCC
OPEN
C7
0.1μF
DAC
+
-
DROOP
+
R6
200k Ω
VCC
VCC
NC
FS
PGOOD1
PGOOD2
PAD
FREQUENCY-DEPENDENT COMPONENTS
1.25V/1.05V SMPS
SWITCHING
FREQUENCY
L1
L2
C2
C11
FS = VCC
200kHz/300kHz
3.3μH
2.7μH
2 x 330μF
330μF
FIGURE 17. ISL8112 TYPICAL DYNAMIC GFX APPLICATION CIRCUIT
13
FN6396.1
August 10, 2010
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