isl8120 Intersil Corporation, isl8120 Datasheet - Page 15

• Manufacturer Part Number: isl8120
• Description: Dual/n-phase Buck Pwm Controller With Integrated Drivers
• Manufacturer: Intersil Corporation

Electrical Specifications
Sink Current
Sink Impedance
OSCILLATOR
Oscillator Frequency Range
Oscillator Frequency
Total Variation
Peak-to-Peak Ramp Amplitude
Linear Gain of Ramp Over V
Ramp Peak Voltage
Peak-to-Peak Ramp Amplitude
Peak-to-Peak Ramp Amplitude
Ramp Amplitude Upon Disable
Ramp Amplitude Upon Disable
Ramp DC Offset
FREQUENCY SYNCHRONIZATION AND PHASE LOCK LOOP
Synchronization Frequency
PLL Locking Time
Input Signal Duty Cycle Range (Note 3)
PWM
Minimum PWM OFF Time
Current Sampling Blanking Time (Note 3)
REFERENCE
Channel 1 Reference Voltage (Include
Error and Differential Amplifiers’ Offsets)
Channel 2 Reference Voltage (Include
Error and Differential Amplifiers’ Offsets)
ERROR AMPLIFIER
DC Gain (Note 3)
Unity Gain-Bandwidth (Note 3)
Input Common Mode Range (Note 3)
Output Voltage Swing
Slew Rate (Note 3)
Input Current (Note 3)
Output Sink Current
Output Source Current
Disable Threshold (Note 3)
DIFFERENTIAL AMPLIFIER
DC Gain (Note 3)
Unity Gain Bandwidth (Note 3)
Negative Input Source Current (Note 3)
PARAMETER
EN
15
Recommended Operating Conditions, Unless Otherwise Noted (Continued)
V
V
UGBW_EA
UGBW_DA
RAMP_PEAK
t
R
SYMBOL
t
BLANKING
I
ΔV
ΔV
ΔV
ΔV
ΔV
RAMP_OS
MIN_OFF
EN_SINK
G
V
UG_DA
SR_EA
EN_SINK
I
V
V
I
I
COMP
COMP
VSEN-
VSEN-
RAMP
REF1
REF2
I
RAMP
RAMP
RAMP
RAMP
RAMP
FB
I
VCC = 5V;-40°C< T
VCC = 5V, V
G
V
V
V
V
V
VCC = 5.4V (2.97V)
VCC = 5.4V (2.97V); F
ISL8120CRZ
ISL8120IRZ
ISL8120CRZ
ISL8120IRZ
R
R
VCC=5V
R
Positive Direction Into the FB pin
Unity Gain Amplifier
EN_SINK
R
EN
EN
EN
EN
EN
RAMP
L
L
L
FS
= 10k, C
= 10k, C
= 10k, C
= 100k, Figure 20
= VCC
= VCC = 5.4V, R
= VCC = 3V; R
= 0V; VCC = 3.5V to 5.5V
= 0V; VCC<3.4V
ISL8120
= ΔV
TEST CONDITIONS
= 5mA
L
L
L
EN
RAMP
= 100p, at COMP Pin
= 100p, at COMP Pin
= 100p, at COMP Pin
= 0.8V
/V
A
UP
EN
UP
<+85°C
SW
= 2k
= 2k
= 400kHz;
(Note 4)
-0.75
-0.75
0.85
MIN
-0.6
-0.7
-0.2
150
344
150
310
10
-9
VCC - 1.4
VCC - 2.4
VCC - 0.4
TYP
1.25
377
105
345
175
100
100
0.6
0.6
0.6
0.6
0.6
98
80
20
1
3
1
1
3
6
0
5
VCC - 1.8
VCC - 1.0
(Note 4)
MAX
1500
1500
0.75
0.95
406
410
0.6
0.7
15
65
+9
90
March 28, 2008
FN6641.0
UNITS
V
V
V
V
V
MHz
V/µs
MHz
kHz
kHz
mA
kHz
mA
mA
dB
nA
dB
nA
µs
ns
ns
%
P-P
P-P
P-P
P-P
P-P
%
%
%
%
%
Ω
V
V
V
V
V
V
V
V
V