參數(shù)資料
型號： ISL6529CRZ
廠商： INTERSIL CORP
元件分類： 穩(wěn)壓器
英文描述： Dual Regulator.Synchronous Rectified Buck PWM and Linear Power Controller
中文描述： SWITCHING CONTROLLER, 650 kHz SWITCHING FREQ-MAX, PQCC16
封裝： 5 X 5 MM, LEAD FREE, PLASTIC, MO-220VHHB, QFN-16
文件頁數(shù)： 6/19頁
文件大小： 623K
代理商： ISL6529CRZ
6
FN9070.5
April 12, 2005
Functional Pin Descriptions
LGATE (Pin 1), (Pin 16 QFN)
Lower gate drive output. Connect to gate of the low-side
MOSFET.
PGND (Pin 2), (Pin 1 QFN)
This pin is the power ground return for the lower gate driver.
GND (Pin 3), (Pin 2 QFN)
Signal ground for the IC. All voltage levels are measured
with respect to this pin. Place via close to pin to minimize
impedance path to ground plane.
5VCC (Pin 4), (Pin 3 QFN)
Provide a well decoupled 5V bias supply for the IC to this
pin. The voltage at this pin is monitored for Power-On Reset
(POR) purposes.
DRIVE2 (Pin 5), (Pin 4 QFN)
Connect this pin to the gate terminal of an external
N-Channel MOSFET transistor. This pin provides the gate
voltage for the linear regulator pass transistor. It also
provides a means of compensating the error amplifier for
applications where the user needs to optimize the regulator
transient response.
COMP Low Output, Sink Current
I
OUT
Low
2.5
3.5
-
mA
Undervoltage Level (V
FB
/V
REF
)
V
UV
-
51.5
-
%
PWM CONTROLLER GATE DRIVERS
UGATE and LGATE Maximum Voltage
V
HGATE
12VCC = 12V
11
12
-
V
UGATE and LGATE Minimum Voltage
V
LGATE
12VCC = 12V
-
0
0.5
V
UGATE and LGATE Source Current
I
GATE
12VCC = 12V
-
-1
-
A
UGATE and LGATE Sink Current
I
GATE
12VCC = 12V
-
1
-
A
UGATE and LGATE OUTPUT IMPEDANCE
R
DS(on)
12VCC = 12V
-
3.1
4.3
LINEAR REGULATOR (DRIVE2)
DC Gain
R
L
= 10K, C
L
= 10pF
-
80
-
dB
Gain-Bandwidth Product
GBWP
R
L
= 10K, C
L
= 10pF
-
15
-
MHz
Slew Rate
SR
R
L
= 10K, C
L
= 10pF
-
6
-
V
/μ
s
FB2 Input Current
I
I
V
FB2
= 0.8V
-
20
150
nA
Drive2 High Output Voltage
V
OUT
High
9.5
10.3
-
V
Drive2 Low Output Voltage
V
OUT
Low
-
0.1
1.0
V
Drive2 High Output Source Current
I
OUT
High
-0.7
-1.4
-
mA
Drive2 Low Output Sink Current
I
OUT
Low
0.85
1.2
-
mA
Over-Voltage Level (V
FB2
/V
REF
)
V
OV
Percent of Nominal
-
160
-
%
Under-Voltage Level (V
FB2
/V
REF
)
V
UV
Percent of Nominal
-
51.5
-
%
REGULATOR ISOLATION
Change in Linear Regulator Output Voltage
(Note 4)
Vout
Linear Output = 2.5V, 6A Load Change on PWM
-
<0.5
-
%
Change in PWM Regulator Output Voltage
(Note 4)
Vout
PWM Output = 1.5V, 1A Load Change on Linear
-
<0.5
-
%
NOTE:
4. Measured in the evaluation board.
Electrical Specifications
Recommended Operating Conditions, Unless Otherwise Noted. Refer to Block and Simplified Power System
Diagrams, and Typical Application Schematic
(Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
5VCC
GND
DRIVE2
FB2
UGATE
FB
COMP
LGATE
14
13
12
11
1
2
3
4
10
9
8
5
6
7
12VCC
PGND
NC
NC = NO INTERNAL
CONNECTION
NC
NC
NC
ISL6529, ISL6529A
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