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ISL8117DEMO2Z 数据表(PDF) 8 Page - Intersil Corporation

部件名 ISL8117DEMO2Z
功能描述  Synchronous Step-down PWM Controller
PDF  23 Pages
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制造商  INTERSIL [Intersil Corporation]
网页  http://www.intersil.com/cda/home
标志 INTERSIL - Intersil Corporation

ISL8117DEMO2Z 数据表(HTML) 8 Page - Intersil Corporation

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ISL8117
8
FN8666.3
June 4, 2015
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DEFAULT INTERNAL MINIMUM SOFT-STARTING
tSS_MIN
Default Internal Output Ramping Time
SS/TRK open
1.5
ms
POWER-GOOD MONITORS
VPGOV
PGOOD Upper Threshold
109
112.5
115
%
VPGUV
PGOOD Lower Threshold
85
87.5
92
%
VPGLOW
PGOOD Low Level Voltage
I_SINK = 2mA
0.35
V
IPGLKG
PGOOD Leakage Current
PGOOD = 5V
20
150
nA
PGOOD TIMING
tPGR
VOUT Rising Threshold to PGOOD Rising (Note 11)1.1
5
ms
tPGF
VOUT Falling Threshold to PGOOD Falling
75
µs
REFERENCE SECTION
VREF
Internal Reference Voltage
0.600
V
Reference Voltage Accuracy
TA = 0°C to +85°C
-0.75
+0.75
%
TA = -40°C to +125°C
-1.00
+1.00
%
IFBLKG
FB Bias Current
-40
0
40
nA
PWM CONTROLLER ERROR AMPLIFIERS
DC Gain
88
dB
GBW
Gain-BW Product
8MHz
SR
Slew Rate
2.0
V/µs
PWM REGULATOR
tOFF_MIN
Minimum Off Time
308
ns
tON_MIN
Minimum On Time
40
ns
DVRAMP
Peak-to-peak Sawtooth Amplitude
VIN = 20V
1.0
V
VIN = 12.0V
0.6
V
Ramp Offset
1.0
V
SWITCHING FREQUENCY
fSW
Switching Frequency
RT = 36k
890
1050
1195
kHz
Switching Frequency
RT = 16.5k
1650
2000
2375
kHz
Switching Frequency
RT PIN connect to GND
250
300
350
kHz
Switching Frequency
RT PIN connect to VCC5V or FLOAT
515
600
645
kHz
VRT
RT Voltage
RT = 36k
770
mV
CLOCK OUTPUT AND SYNCHRONIZATION
VCLKH
CLKOUT Output High
ISOURCE = 1mA
VCC5V -
0.3
V
VCLKL
CLKOUT Output Low
ISINK = 1mA
0.3
V
FCLK
CLKOUT Frequency
RT = VCC5V
515
600
645
kHz
FSYNC
SYNC Synchronization Range
RT = 36kΩ
1230
2200
kHz
DIODE EMULATION MODE DETECTION
VMODETHH
MOD/SYNC Threshold High
1.1
1.6
2.1
V
VMODEHYST MOD/SYNC Hysteresis
200
mV
VCROSS
Diode Emulation Phase Threshold (Note 10)VIN = 12V
-3
mV
Electrical Specifications Recommended operating conditions unless otherwise noted. Refer to “Block Diagram” on page 5 and “Typical
Application Schematics” on page 6. VIN = 4.5V to 60V, or VCC5V = 5V ±10%, C_VCC5V = 4.7µF, TA = -40°C to +125°C, Typical values are at TA = +25°C,
unless otherwise specified. Boldface limits apply across the operating temperature range, -40°C to +125°C. (Continued)
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
(Note 9)TYP
MAX
(Note 9)UNIT



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