ISL6446A Просмотр технического описания (PDF) - Renesas Electronics
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ISL6446A Datasheet PDF : 22 Pages
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ISL6446A
Electrical Specifications Operating Conditions Unless Otherwise Noted: VIN = 12V, or VCC = 5V ±10%, TA = -40°C to +85°C. Typical
values are at +25°C. Boldface limits apply over the operating temperature range, -40°C to +85°C (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
(Note 9)
TYP
MAX
(Note 9)
UNIT
ENx/SSx Enable Threshold Hysteresis
ENx/SSx Soft-start Top of Ramp
Voltage
VENx_hys
VSSx_top
(Note 7)
(Note 7)
15
mV
3.12
V
POWER-ON RESET ON VCC
Rising Threshold
Falling Threshold
PWM CONVERTERS
VPOR_r
VPOR_f
4.2
4.4
4.48
V
3.85
4.0
4.1
V
Minimum UGATE on Time
Maximum Duty Cycle
Maximum Duty Cycle
FBx Pin Bias Current
OSCILLATOR
tUGATE_min (Note 7)
DCmax VIN = 5.0V or 12V; fSW = 300kHz
DCmax VIN = 5.0V; fSW = 2.58MHz
IFBx VFB1 = VFB2 = 600mV
100
ns
95
%
79
%
-250
30
250
nA
Low-end Frequency
Oscillation Frequency
High-end Frequency
Frequency Adjustment Range
fSW
VIN = 12V; RT = 163kΩ
fSW VIN = 5V or 12V; RT = 52.3kΩ
VIN = 24V; RT = 52.3kΩ
fSW
VIN = 5V; RT = 4.75kΩ
VIN = 12V; RT = 4.75kΩ
fSW RT = 163kΩ (Note 7)
RT = 4.75kΩ (Note 7)
103
kHz
270
300
330
kHz
270
305
340
kHz
2.20
2.5
2.85
MHz
2.20
2.59
2.95
MHz
0.1
MHz
2.6
MHz
PWM Sawtooth Ramp Amplitude
(Peak-to-peak)
VP-P (Note 8)
1.25
V
PWM Sawtooth Ramp Offset
VPWM_OFF (Note 8)
PWM CONTROLLER GATE DRIVERS (Note 7)
1.25
V
Upper Gate Pull-up Resistance
2.6
Ω
Upper Gate Pull-down Resistance
2
Ω
Lower Gate Pull-up Resistance
2.6
Ω
Upper Gate Pull-down Resistance
2
Ω
Rise Time
Fall Time
Dead Time Between Drivers
CL = 3300pF
CL = 3300pF
25
ns
25
ns
20
ns
ERROR AMPLIFIERS
DC Gain
Gain (Note 8)
88
dB
Gain-bandwidth Product
GBWP (Note 8)
15
MHz
Slew Rate
SR COMP = 10pF (Note 8)
5
V/µs
Maximum Output Voltage
Minimum Output Voltage
PROTECTION AND OUTPUT MONITOR
VEA_H
VEA_L
ICOMP_SRC = 400µA
ICOMP_SINK = 400µA
3.9
4.2
V
0.8
1.1
V
Overvoltage Threshold
OV
111
116
121
%
Undervoltage Threshold
UV
77
82
88
%
FN8384 Rev 3.00
Aug 27, 2015
Page 8 of 22
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