参数资料
型号: ISL9506HRZ-T
厂商: Intersil
文件页数: 2/27页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM 40-QFN
标准包装: 4,000
系列: Robust Ripple Regulator™ (R³)
PWM 型: 控制器
输出数: 1
频率 - 最大: 500kHz
电源电压: 4.75 V ~ 5.25 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -10°C ~ 100°C
封装/外壳: 40-VFQFN 裸露焊盘
包装: 带卷 (TR)
ISL9506
Functional Pin Description
VW (Pin 8)
A resistor from this pin to COMP programs the switching
frequency. (7k Ω gives approximately 300kHz). VW pin
sources current.
40
39
38
37
36
35
34
33
32
31
COMP (Pin 9)
This pin is the output of the error amplifier.
LP 1
30 VSEL2
PMON 2
RBIAS 3
VRHOT# 4
29 VSEL1
28 VSEL0
27 PWM1
FB (Pin 10)
This pin is the inverting input of error amplifier.
VDIFF (Pin 11)
This pin is the output of the differential amplifier.
NTC 5
SOFT 6
OCSET 7
VW 8
COMP 9
FB 10
GND PAD
(BOTTOM)
26 PWM2
25 PWM3
24 FCCM
23 ISEN1
22 ISEN2
21 ISEN3
VSEN (Pin 12)
Remote output voltage sense input. Connect to the point of
load.
RTN (Pin 13)
Remote voltage sensing return. Connect to ground at the
point of load.
DROOP (Pin 14)
11
12
13
14
15
16
17
18
19
20
Output of droop amplifier. Output = VO + DROOP.
DFB (Pin 15)
Inverting input to droop amplifier.
LP (Pin 1)
Low power indicator input. When asserted low, indicates a
reduced load-current condition. For ISL9506, when LP is
asserted low, PWM2 will be disabled.
PMON (Pin 2)
An analog output. PMON sends out an analog signal
proportional to the product of VSEN voltage and the droop
VO (Pin 16)
An input to the IC that reports the local output voltage.
VSUM (Pin 17)
This pin is connected to the current summation junction.
VIN (Pin 18)
Battery supply voltage, used for feed forward.
voltage.
VSS (Pin 19)
RBIAS (Pin 3)
Connect a 147k Resistor to VSS, sets the internal current
reference.
VRHOT# (Pin 4)
Thermal overload output indicator.
NTC (Pin 5)
Thermistor input to VRHOT# circuit.
SOFT (Pin 6)
A capacitor from this pin to VSS sets the maximum slew rate
of the output voltage. It affects both soft start and VSEL
transitioning slew rate. SOFT pin is the non-inverting input of
the error amplifier.
OCSET (Pin 7)
Overcurrent set input. A resistor from this pin to VO sets
DROOP voltage limit for OC trip. A 10μA current source is
connected internally to this pin.
2
Signal ground; Connect to local controller ground.
VDD (Pin 20)
5V bias power.
ISEN3 (Pin 21)
Individual current sensing for Channel 3.
ISEN2 (Pin 22)
Individual current sensing for Channel 2.
ISEN1 (Pin 23)
Individual current sensing for Channel 1.
FCCM (Pin 24)
Forced Continuous Conduction Mode (FCCM) enable pin to
MOSFET drivers. It will disable diode emulation.
PWM3 (Pin 25)
PWM output for Channel 3. When PWM3 is pulled to 5V
VDD, PWM3 will be disabled and allow other channels to
operate.
FN6722.0
August 13, 2008
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