参数资料
型号: IR3623MTRPBF
厂商: International Rectifier
文件页数: 13/27页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM VM 32MLPQ
标准包装: 1
PWM 型: 电压模式
输出数: 2
频率 - 最大: 1.2MHz
占空比: 85%
电源电压: 8.5 V ~ 14.5 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 125°C
封装/外壳: 32-VFQFN 裸露焊盘
包装: 标准包装
其它名称: IR3623MTRPBFDKR
IR3623MPbF
Output Voltage
Tracking
and
In general the R A and R B set the output voltage
Sequencing
The IR3623 can accommodate a full spectrum of
user programmable tracking and sequencing
options using Track, Seq, Enable and Power
Good pins.
for the first output and R C and R D set the output
voltage for the second output.
For simultaneously vs. ratiometric, RE and RF
can be selected according to the table below:
Through these pins both simple voltage tracking
such as that required by the DDR memory
application or more sophisticated sequencing
such ratiometric or simultaneously can be
Track Pin
R E
R F
simultaneously
R C
R D
ratiometric
R A
R B
implemented.
The Seq pin controls the internal current sources
to set the power up or down sequencing, toggle
this pin high for power up and toggle this pin low
for power down.
The Track pin is used to determine the second
channel output for either ratiometric or
simultaneously by using two external resistors.
Figure 9 shows how these pins are configured for
different sequencing mode.
3 V
I SS1 = 28uA
64uA
V o1
SS1/SD1
C SS1
Seq
POR
I hiccup1 = 3uA
OCP1
Fig. 10: Ratiometric Power up /down
R A
R B
Fb1
VP1
E/A1
V REF
3 V
I SS2 = 28uA
64uA
SS2/SD2
Floating
OCP2
R C
R D
V o 2
Fb2
POR
I hiccup2 = 3uA
E/A2
Fig. 11: Simultaneously Power Up / down
The Track pin must be connected to Vout3 if it is
V o1
R E
R F
Track2
VP2
Floating
not used. For current share mode, high output
voltage application (e.g. 5V) this pin needs to be
connected to Vcc.
Fig. 9: Sequencing using Track pin
www.irf.com
January 28, 2013
13
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相关代理商/技术参数
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IR3624MPBF 功能描述:IC REG CTRLR BUCK PWM VM 10-MLPD RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 占空比:66.7% 电源电压:4.75 V ~ 5.25 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 85°C 封装/外壳:40-VFQFN 裸露焊盘 包装:带卷 (TR)
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IR3629 制造商:IRF 制造商全称:International Rectifier 功能描述:HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER WITH POWER GOOD OUTPUT