- 您现在的位置：买卖IC网 > PDF目录15067 > ISL6525CB (Intersil)IC REG CTRLR BUCK PWM VM 14-SOIC PDF资料下载
参数资料
| 型号： | ISL6525CB |
| 厂商： | Intersil |
| 文件页数： | 4/11页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 14-SOIC |
| 标准包装： | 50 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 215kHz |
| 占空比： | 100% |
| 电源电压： | 10.8 V ~ 13.2 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： | 0°C ~ 70°C |
| 封装/外壳： | 14-SOIC（0.154"，3.90mm 宽） |
| 包装： | 管件 |
ISL6525
Typical Performance Curves
80
R T PULLUP
70
1000
100
TO +12V
60
50
40
C GATE = 3300pF
10
R T PULLDOWN
TO V SS
30
20
10
0
C GATE = 1000pF
C GATE = 10pF
10
100
SWITCHING FREQUENCY (kHz)
1000
100
200
300 400 500 600 700 800
SWITCHING FREQUENCY (kHz)
900
1000
5 ? 10
R T ( k ? )
Fs ≈ 200kHz + ---------------------
FIGURE 1. R T RESISTANCE vs FREQUENCY
Functional Pin Descriptions
RT (Pin 1)
This pin provides oscillator switching frequency adjustment.
By placing a resistor (R T ) from this pin to GND, the nominal
200kHz switching frequency is increased according to the
following equation:
6
(R T to GND)
Conversely, connecting a pull-up resistor (R T ) from this pin to
V CC reduces the switching frequency according to the
following equation.:
FIGURE 2. BIAS SUPPLY CURRENT vs FREQUENCY
GND (Pin 6)
Signal ground for the IC. All voltage levels are measured with
respect to this pin.
PGOOD (Pin 7)
PGOOD is an open-drain output used to indicate the status
of the converter output voltage. This pin is pulled low when
the converter output is not within ± 10% of the set voltage. A
delay time can be programmed using the DELAY pin (pin
14). See Pin 14 description for more information.
PHASE (Pin 8)
Connect the PHASE pin to the upper MOSFET source. This
pin is used to monitor the voltage drop across the MOSFET
4 ? 10
R T ( k ? )
7
Fs ≈ 200kHz – ---------------------
(R T to 12V)
for over-current protection. This pin also provides the return
path for the upper gate drive.
UGATE (Pin 9)
r DS ( ON )
OCSET (Pin 2)
Connect a resistor (R OCSET ) from this pin to the drain of the
upper MOSFET. R OCSET , an internal 200 μ A current source
(I OCS ), and the upper MOSFET on-resistance (r DS(ON) ) set
the converter over-current (OC) trip point according to the
following equation:
I OCS ? R OCSET
I PEAK = --------------------------------------------
An over-current trip cycles the soft-start function.
SS (Pin 3)
Connect a capacitor from this pin to ground. This capacitor,
along with an internal 10 μ A current source, sets the soft-
start interval of the converter.
COMP (Pin 4) and FB (Pin 5)
COMP and FB are the available external pins of the error
amplifier. The FB pin is the inverting input of the error
amplifier and the COMP pin is the error amplifier output.
These pins are used to compensate the voltage-control
feedback loop of the converter.
4
Connect UGATE to the upper MOSFET gate. This pin
provides the gate drive for the upper MOSFET.
BOOT (Pin 10)
This pin provides bias voltage to the upper MOSFET driver.
A bootstrap circuit may be used to create a BOOT voltage
suitable to drive a standard N-Channel MOSFET.
PGND (Pin 11)
This is the power ground connection. Tie the lower MOSFET
source to this pin.
LGATE (Pin 12)
Connect LGATE to the lower MOSFET gate. This pin
provides the gate drive for the lower MOSFET.
VCC (Pin 13)
Provide a 12V bias supply for the chip to this pin.
DELAY (Pin 14)
This pin is used to program the delay of the PGOOD (pin 7)
signal by placing a capacitor between this pin and GND or
VCC. The external capacitor only delays the rising edge of
FN4998.3
December 27, 2004
相关PDF资料 |
PDF描述 |
|---|---|
| ISL6522IR-T | IC REG CTRLR BST PWM VM 16-QFN |
| RCM43DCSN-S288 | CONN EDGECARD 86POS .156 EXTEND |
| RCM43DCSH-S288 | CONN EDGECARD 86POS .156 EXTEND |
| ISL6522IR | IC REG CTRLR BST PWM VM 16-QFN |
| RCM43DCSD-S288 | CONN EDGECARD 86POS .156 EXTEND |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL6525CB-T | 功能描述:IC REG CTRLR BUCK PWM VM 14-SOIC RoHS:否 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) |
| ISL6525CBZ | 功能描述:电压模式 PWM 控制器 VTT REG FORVRM 8.5 1 4LD RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| ISL6525CBZ-T | 功能描述:IC REG CTRLR BUCK PWM VM 14-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:275kHz 占空比:50% 电源电压:18 V ~ 110 V 降压:无 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:-40°C ~ 85°C 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) |
| ISL6526ACB | 功能描述:IC REG CTRLR BUCK PWM VM 14-SOIC RoHS:否 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) |
| ISL6526ACB-T | 功能描述:IC REG CTRLR BUCK PWM VM 14-SOIC RoHS:否 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) |
发布紧急采购，3分钟左右您将得到回复。