参数资料
型号: MAX1584ETJ+T
厂商: Maxim Integrated Products
文件页数: 16/29页
文件大小: 0K
描述: IC DGTL CAM PWR-SUP 5CH 32TQFN
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,数字式相机
输入电压: 0.7 V ~ 5.5 V
输出数: 5
输出电压: 1.25 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 32-WFQFN 裸露焊盘
供应商设备封装: 32-TQFN-EP(5x5)
包装: 带卷 (TR)
5-Channel Slim DSC Power Supplies
FB_
CC_
MAX1584 AUX1 AND
AUX2, MAX1585 AUX1
STEP-UP CONTROLLER
FB2
CC2
MAX1585 AUX2
INVERTING CONTROLLER
REF
REFI
0.85
REF
LEVEL
SHIFT
SOFT-START
(REFI RAMPS FROM
0V TO REF IN 1024 OSC
CYCLES)
R
S
Q
DL_
REF
REFI
0.85
REF
LEVEL
SHIFT
SOFT-START
(REFI RAMPS FROM
REF TO 0V IN 1024 OSC
CYCLES)
R
S
Q
DL2
OSC
CLK
OSC
CLK
FAULT
PROTECTION
ENABLE
FAULT
PROTECTION
ENABLE
FB3
MAX1584 AND MAX1585
AUX3 STEP-DOWN
CONTROLLER
CC3
REF
REFI
0.85
REF
LEVEL
SHIFT
SOFT-START
(REFI RAMPS FROM
0V TO REF IN 1024 OSC
CYCLES)
R
S
Q
DL3
CLK
OSC
FAULT
Figure 3. AUX Controller Functional Diagrams
PROTECTION
ENABLE
OSC cycles, then all MAX1584/MAX1585 channels latch
off.
Maximum Duty Cycle
The MAX1584/MAX1585 auxiliary PWM controllers have
a guaranteed maximum duty cycle of 80%. In boost
designs that employ continuous current, the maximum
duty cycle limits the boost ratio so that:
1 - V IN / V OUT ≤ 80%
With discontinuous inductor current, no such limit exists
for the input/output ratio since the inductor has time to
fully discharge before the next cycle begins.
AUX1
AUX1 can be used for conventional DC-DC boost and
flyback designs (Figure 5). Its output (DL1) is designed
16
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