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ISL97651 Datasheet PDF : 19 Pages
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ISL97651
Electrical Specifications
VIN = 5V, VBOOST = VSUP = 15V, VON = 25V, VOFF = -8V, over-temperature from -40°C to +105°C; Parameters
with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits
established by characterization and are not production tested. (Continued)
PARAMETER
DESCRIPTION
CONDITIONS
MIN
TYP MAX UNIT
EFFBOOST
Peak Efficiency
See graphs and component
recommendations
90
%
rDS(ON)
ΔVBOOST/ΔVIN
ΔVBOOST/ΔIOUT
VFBB
Switch ON-Resistance
Line Regulation
Load Regulation
Boost Feedback Voltage
PI mode, R1 = 10k and C3 = 4.7nF over a
load range of 0mA to 300mA (tested),
0-ILIMIT_ONSET (by design)
TA = +25°C
1.192
1.188
70
100
mΩ
0.4
1.5
%/V
0.1
0.5
%
1.205 1.218
V
1.205 1.222
V
ACCBOOST
AVDD Output Accuracy
TA = +25°C
-1.5
+1.5
%
tSS
Soft-start Period for AVDD
CDEL = 220nF
9.6
ms
VLOGIC BUCK
DMAX_buck typical maximum duty cycle = 0.85*(VINL-ILOAD*0.3) ILOAD_min, Minimum 1mA for VINL-VBUCK >1.5V, 5mA otherwise
VBUCK
Buck Output Voltage
Output current = 0.5A
VREF
4
V
ILXL
LX Leakage Current
LX = 0V and 18V
-10
.01
10
µA
IBUCK
Buck Switch Current
Current limit
2.0
2.7
A
EFFBUCK
Peak Efficiency
See graphs and component
recommendations
92
%
RDS-ONBK
ΔVBUCK/ΔVIN
ΔVBUCK/ΔIOUT
VFBL
Switch ON-Resistance
Line Regulation
Load Regulation
FBL Regulation Voltage
ACCLOGIC
tSS(L)
VLOGIC Output Accuracy
Soft-Start Period for V(Logic)
PI mode, R1 = 2k and C3 = 4.7nF over a
load range of 0mA to 300mA (tested),
0-ILIMIT_ONSET (by design)
IDRVL = 1mA, TA = +25°C
IDRVL = 1mA
TA = +25°C
C(VREF) = 220nF (Note - no soft-start if EN
asserted HIGH before ENB)
1.176
1.174
-2
200
455
mΩ
0.1
1
%/V
0.04
0.5
%
1.2 1.224
V
1.2 1.226
V
+2
%
0.5
ms
NEGATIVE (VOFF) CHARGE PUMP
VOFF
VOFF Output Voltage Range
ILOAD_NCP_MIN External Load Driving Capability
rON(NOUT)H
High-Side Driver ON-Resistance at
NOUT
rON(NOUT)L
Low-Side Driver ON-Resistance at
NOUT
IPU(NOUT)LIM
Pull-up Current Limit in NOUT
IPD(NOUT)LIM
Pull-down Current Limit in NOUT
I(NOUT)LEAK
Leakage Current in NOUT
VFBN
FBN Regulation Voltage
ACCN
D_NCP_max
VOFF Output Accuracy
Max Duty Cycle of the Negative
Charge Pump
2X Charge Pump
VSUP > 5V
I(NOUT) = +60mA
I(NOUT) = -60mA
V(NOUT) = 0V to V(SUP) - 0.5V
V(NOUT) = 0.36V to V(VSUP)
V(FBN) < 0 or EN = LOW
IDRVN = 0.2mA, TA = +25°C
IDRVN = 0.2mA
IOFF = 1mA, TA = +25°C
-VSUP+1.4V
30
0
V
mA
10
Ω
5
Ω
60
-2
0.173
0.171
-3
270
mA
-200
-60
mA
2
µA
0.203 0.233
V
0.203 0.235
V
+3
%
50
%
rPD(FBN)OFF
Pull-Down Resistance, Not Active I(FBN) = 500µA
2
3
4
kΩ
3
FN7493.3
April 24, 2009
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