参数资料
型号: ISL6353IRTZ
厂商: Intersil
文件页数: 4/30页
文件大小: 0K
描述: IC CONTROLLER DDR VR12 40TQFN
标准包装: 60
应用: 控制器,DDR,Intel VR12
输入电压: 4.5 V ~ 25 V
输出数: 1
输出电压: 0.25 V ~ 1.52 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 40-WFQFN 裸露焊盘
供应商设备封装: 40-TQFN-EP(5x5)
包装: 管件
ISL6353
Pin Configuration
ISL6353
(40 LD TQFN)
TOP VIEW
40
39
38
37
36
35
34
33
32
31
SDA
ALERT#
SCLK
VR_ON
1
2
3
4
30 LG2
29 VDDP
28 PWM3
27 LG1
PGOOD
IMON
VR_HOT#
NTC
VW
5
6
7
8
9
GND
(BOTTOM PAD)
26 GND
25 PH1
24 UG1
23 BOOT1
22 PROG1
COMP 10
21 VIN
11
12
13
14
15
16
17
18
19
20
Pin Descriptions
PIN NUMBER
SYMBOL
DESCRIPTION
1, 2, 3
SDA, ALERT#, SCLK Serial communication bus signals connected between the CPU and the voltage regulator.
4
5
6
7
8
9
10
11
12
13
14
15
16
VR_ON
PGOOD
IMON
VR_HOT#
NTC
VW
COMP
FB
FB2
ISEN3
ISEN2
ISEN1
VSEN
4
Voltage regulator enable input. A high level logic signal on this pin enables the VR.
Open-drain output to indicate the regulator is ready to supply regulated voltage. Use an appropriate external pull-up
resistor.
Output current monitor pin. IMON sources a current proportional to the regulator output current. A resistor
connected from this pin to ground will set a voltage that is proportional to the load current. This voltage is sampled
with an internal ADC to produce a digital IMON signal that can be read through the serial communications bus.
Thermal overload output indicator.
Thermistor input to the VR_HOT# circuit.
Window voltage set pin used to set the switching frequency. A resistor from this pin to COMP programs the
switching frequency (18k Ω gives approximately 300kHz).
This pin is the output of the error amplifier.
This pin is the inverting input of the error amplifier.
This pin switches in an RC network from VOUT to FB in PS1 and PS2 modes to help improve transient performance
and phase margin when dropping phases in low power states. There is a switch between the FB2 pin and the FB
pin. The switch is off in the PS0 state and on in the PS1 and PS2 states. If this function is not needed, the pin can
be left open.
Individual current sensing input for Phase 3. Leave this pin open when ISL6353 is configured in 2-phase mode.
Individual current sensing input for Phase 2. When ISEN2 is pulled to 5V VDD, the controller will disable Phase 2,
and the controller will run in 1-phase mode.
Individual current sensing input for Phase 1.
Output voltage sense pin. Connect to the output voltage (typically VDDQ) at the desired remote voltage sensing
location.
September 15, 2011
FN6897.0
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