ISL6730A, ISL6730B, ISL6730C, ISL6730D
7
FN8258.1
August 8, 2013
Gate Drive Max. Sourcing/Sinking
Current
-1.5- A
Rise Time C
O
= 2.2nF, V
CC
= 15V, Gate Voltage Rise Time from 10%
to 90% of V
GC
-3462ns
Fall Time C
O
= 2.2nF, V
CC
= 15V, Gate Voltage Fall Time from 10%
to 90% of V
GC
-3457ns
Gate Clamp Voltage V
GC
10.5 12 13.5 V
VOLTAGE REFERENCE
Reference Voltage V
REF
2.48 2.5 2.52 V
Feedback Pin Pull-Down Current I
FB
-65-nA
Rising Threshold to Enable Converter FB_EN 280 300 320 mV
Falling Threshold to Disable Converter FB_DIS 190 202 214 mV
Enable Hysteresis FB_Hys - 100 - mV
VOLTAGE ERROR AMPLIFIER
Error Amp Transconductance Gmv 50 77 104 µA/V
ISource/Sink -13-µA
COMP Offset Voltage V
COMP_OFF
0.95 1.01 1.07 V
COMP Soft-Start Enable Voltage V
COMP_EN
0.58 0.64 0.75 V
INPUT VOLTAGE SENSING
VIN Leakage Current -9-nA
MULTIPLIER GAIN
GMUL COMP = 2.5V, V
IN
= 1.0V, BO = 1.0V, I
SEN
= 50µA 0.196 0.25 0.296 V/V
CURRENT ERROR AMPLIFIER
Current DC Gain A
iDC
ΔI
ICOMP
/ΔI
ISEN
1.6 1.9 2.2 A/A
Error Amp Transconductance Gmi I
ICOMP
= ±20µA 205 268 331 µA/V
ICOMP Source/Sink Current (Note 7) -60-µA
Current Sensing Input Offset -3 2 7 mV
LIGHT LOAD EFFICIENCY ENHANCEMENT AND OVERPOWER PROTECTION
Skip Mode COMP Threshold V
SCMT
Applied for ISL6730A/B 1.32 1.36 1.4 V
COMP Upper Limit V
CUL
3.53 3.85 4.17 V
COMP Valid Range V
CUL
-1V 2.5 2.83 3.16 V
FB Exit Threshold Voltage V
FB_EXIT
Fraction of the set point (V
REF
), I
ISEN
= 0µA, Applied for
ISL6730A/B
87 88 89 %
ISEN Exit Threshold Current I
SEN_EXIT
V
FB
= 2.5V, Applied for ISL6730A/B -38 -29 -20 µA
BROWNOUT DETECTION
Brownout Rising Threshold V
BO_R
478 494 510 mV
Brownout Falling Threshold V
BO_F
387 401 415 mV
OVERVOLTAGE PROTECTION
Overvoltage Protection V
OVP
Fraction of the set point (V
REF
); ~1µs noise filter 102.9 104.1 105.3 %
Electrical Specifications Operating Conditions: V
CC
= 15V, T
A
= +25°C. Boldface limits apply over the operating temperature range,
-40°C to +125°C. (Continued)
PARAMETER SYMBOL TEST CONDITIONS
MIN
(Note 8) TYP
MAX
(Note 8) UNITS
