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參數(shù)資料
| 型號(hào)： | ISL97516 |
| 廠商： | Intersil Corporation |
| 英文描述： | 600kHz/1.2MHz PWM Step-Up Regulator |
| 中文描述： | 600kHz/1.2MHz PWM升壓調(diào)節(jié)器 |
| 文件頁(yè)數(shù)： | 5/9頁(yè) |
| 文件大小： | 318K |
| 代理商： | ISL97516 |
5
FN9261.2
March 16, 2007
Applications Information
The ISL97516 is a high frequency, high efficiency boost
regulator operated at constant frequency PWM mode. The
boost converter stores energy from an input voltage source
and deliver it to a higher output voltage. The input voltage
range is 2.3V to 5.5V and output voltage range is 5V to 25V.
The switching frequency is selectable between 600kHz and
1.2MHz allowing smaller inductors and faster transient
response. An external compensation pin gives the user
greater flexibility in setting output transient response and
tighter load regulation. The converter soft-start characteristic
can also be controlled by external C
SS
capacitor. The EN pin
allows the user to completely shutdown the device.
Boost Converter Operations
Figure 10 shows a boost converter with all the key
components. In steady state operating and continuous
conduction mode where the inductor current is continuous,
the boost converter operates in two cycles. During the first
cycle, as shown in Figure 11, the internal power FET turns
on and the Schottky diode is reverse biased and cuts off the
current flow to the output. The output current is supplied
from the output capacitor. The voltage across the inductor is
V
IN
and the inductor current ramps up in a rate of V
IN
/L, L is
the inductance. The inductance is magnetized and energy is
stored in the inductor. The change in inductor current is:
FIGURE 7. TRANSIENT RESPONSE
FIGURE 8. PACKAGE POWER DISSIPATION vs AMBIENT
TEMPERATURE
FIGURE 9. PACKAGE POWER DISSIPATION vs AMBIENT TEMPERATURE
Typical Performance Curves
(Continued)
V
O
= 12V
f
s
= 1.2MHz
V
IN
= 3.3V
I
O
= 50mA to 300mA
JEDEC JESD51-7 HIGH EFFECTIVE THERMAL
CONDUCTIVITY TEST BOARD
1.0
0.9
0.6
0.4
0.3
0.2
0.1
0
0
25
50
75
100
125
AMBIENT TEMPERATURE (°C)
P
85
870mW
θ
JA
=+115°CW
MSOP8
0.8
0.5
0.7
JEDEC JESD51-3 LOW EFFECTIVE THERMAL
CONDUCTIVITY TEST BOARD
0.6
0.4
0.3
0.2
0.1
0.0
0
25
50
75
100
125
AMBIENT TEMPERATURE (°C)
P
85
486mW
θ
JA
=+206°CW
MSOP8
0.5
Δ
I
L1
Δ
T1
V
---------
×
=
Δ
T1
SW
------------
=
D
Duty Cycle
=
Δ
V
O
I
OUT
---------------
Δ
T
1
×
=
(EQ. 1)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISL97516IUZ | 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 600KHZ/1.2MHZ PWM ST EP-UP REG 8LD RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| ISL97516IUZEVALZ | 制造商:Intersil Corporation 功能描述:ISL97516IUZ EVALUATION BOARD - 8LD MSOP - ROHS COMPLIANT - Bulk 制造商:Intersil Corporation 功能描述:EVALUATION BOARD FOR ISL97516IUZ 制造商:Intersil 功能描述:ISL97516IUZ EVALI ON BRD 8LD RHS CMPL |
| ISL97516IUZ-EVALZ | 功能描述:EVALUATION BOARD FOR ISL97516IUZ RoHS:是 類別:編程器，開(kāi)發(fā)系統(tǒng) >> 評(píng)估板 - DC/DC 與 AC/DC（離線）SMPS 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:True Shutdown™ 主要目的:DC/DC，步升 輸出及類型:1，非隔離 功率 - 輸出:- 輸出電壓:- 電流 - 輸出:1A 輸入電壓:2.5 V ~ 5.5 V 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):升壓 頻率 - 開(kāi)關(guān):3MHz 板類型:完全填充 已供物品:板 已用 IC / 零件:MAX8969 |
| ISL97516IUZ-T | 功能描述:IC REG BOOST ADJ 1A 8MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 類型:升壓（升壓） 輸出類型:可調(diào)式 輸出數(shù):1 輸出電壓:5 V ~ 25 V 輸入電壓:2.3 V ~ 5.5 V PWM 型:電流模式 頻率 - 開(kāi)關(guān):600kHz，1.2MHz 電流 - 輸出:1A 同步整流器:無(wú) 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 包裝:管件 供應(yīng)商設(shè)備封裝:8-MSOP |
| ISL97516IUZ-TK | 功能描述:IC REG BOOST ADJ 1A 8MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 類型:降壓（降壓） 輸出類型:可調(diào)式 輸出數(shù):1 輸出電壓:0.6 V ~ 4.5 V 輸入電壓:3 V ~ 5.5 V PWM 型:電流模式 頻率 - 開(kāi)關(guān):3MHz 電流 - 輸出:1.5A 同步整流器:無(wú) 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:6-LLP-EP（3x3） 產(chǎn)品目錄頁(yè)面:1300 (CN2011-ZH PDF) 其它名稱:LM2831ZSDLM2831ZSDTR |
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