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參數(shù)資料
| 型號(hào)： | ISL8011 |
| 廠商： | Intersil Corporation |
| 英文描述： | 1.2A Integrated FETs, High Efficiency Synchronous Buck Regulator(1.2A集成FETs, 高效同步降壓調(diào)節(jié)器) |
| 中文描述： | 1.2A的集成FET，高效率同步降壓穩(wěn)壓器（1.2A的集成FET的高效同步降壓調(diào)節(jié)器） |
| 文件頁數(shù)： | 5/10頁 |
| 文件大?。?/td> | 296K |
| 代理商： | ISL8011 |
5
FN9254.1
November 6, 2007
Pin Descriptions
PVIN
Input supply voltage. Connect a 10μF ceramic capacitor to
power ground.
VCC
Supply voltage for internal analog and digital control circuits,
delivered from PVIN. Bypass with 0.1μF ceramic capacitor to
signal ground.
EN
Regulator enable pin. Force this pin above 1.4V enable the
chip. Force this pin below 0.4V shutdown the chip and
discharge output capacitor when driven to low. Do not leave
this pin floating.
POR
200ms timer output. At power-up or EN HI, this output is a
200ms delayed Power-Good signal for the output voltage.
GND
Ground.
PHASE
Switching node connection. Connect to one terminal of
inductor.
PGND
Power ground. Connect all power grounds to this pin.
SGND
Analog ground. SGND and PGND should only have one
point connection.
FB
Buck regulator output feedback. Connect to the output
through a resistor divider for adjustable the output voltage.
Exposed Pad
The exposed pad must be connected to the PGND pin for
proper electrical performance and optimal thermal
performance.
FIGURE 9. LOAD TRANSIENT (V
IN
= 3.6V; V
O
= 1.6V; I
O
= 0A TO ~1A)
Typical Operating Performance
(Continued)
V
PHASE
I
L
V
OUT
I
O
ISL8011
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