ISL6232 Datasheet, PDF (4/25 Pages) Intersil Corporation – High Efficiency System Power Supply Controller for Notebook Computers

ISL6232
Electrical Specifications
VIN = 12V, SHDN# = EN3 = EN5 = VCC, SKIP# = FB3 = FB5 = 0V, I_LDO5 = 0mA, I_LDO3 = 0mA, C_REF = 0.22µF,
C_LDO3 = C_LDO5 = 4.7µF, T_A = -10°C to +100°C (Note 2). 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
TEST CONDITIONS
MIN
TYP MAX UNITS
UGATE/LGATE Gate Driver Sink Current
UGATE and LGATE are forced to 2.5V
2
A
UGATE/LGATE Gate Driver Source Current
UGATE and LGATE are forced to 2.5V
1
A
UGATE Gate Driver Pull-Up Resistance
Force BOOT-PHASE to 5V
2
4
Ω
UGATE Gate Driver Pull-Down Resistance
Force BOOT-PHASE to 5V
1
2.5
Ω
LGATE Gate Driver Pull-Up Resistance
LDO5 = 5V
2
4
Ω
LGATE Gate Driver Pull-Down Resistance
LDO5 = 5V
1
2.5
Ω
OUT3/OUT5 ON-Resistance at Discharge Mode
20
40
Ω
OUT3/OUT5 Low-Side Switch Turn-On
Threshold at Discharge Mode
0.2
0.3
0.4
V
LINEAR REGULATOR AND REFERENCE
VIN Shutdown Current
VIN = 5.5V to 25V, SHDN# = 0V
5
10
µA
VIN Standby Current
VIN = 5.5V to 25V, EN3 = EN5 = 0
150
200
µA
VIN Operating Supply Current
LDO5 switched to OUT5, 5V SMPS enabled and
LDO3 switched to OUT3, 3.3V SMPS enabled.
1
7
µA
LDO5 Output Voltage
LDO5 Maximum Output Current
VIN = 6V to 25V, EN3 = EN5 = 0, I_LDO5 = 0 to 100mA 4.9
5.0
5.1
V
VIN = 5.5V to 25V, EN3 = EN5 = 0, I_LDO5 = 0 to 100mA 4.8
V
VIN = 5.5V to 25V, EN3 = EN5 = 0
100
mA
LDO5 Current Limit
LDO5 pulled to GND
170
300
mA
LDO5 Undervoltage Lockout Threshold
Rising Edge
4.3
4.5
V
Falling Edge
4.0
4.2
V
LDO5 Switch-Over Threshold
4.63 4.78 4.93
V
LDO5 Switch-Over Resistance
OUT5 to LDO5
2
3
Ω
LDO3 Output Voltage
LDO3 Maximum Output Current
VIN = 6V to 25V, EN3 = EN5 = 0, I_LDO3 = 0 to 100mA 3.215 3.28 3.345
V
VIN = 5.5V to 25V, EN3 = EN5 = 0, I_LDO3 = 0 to 100mA 3.115
V
VIN = 5.5V to 25V, EN3 = EN5 = 0
100
mA
LDO3 Current Limit
LDO3 pulled to GND
170
300
mA
LDO3 Switch-Over Threshold
Rising Edge
3.00 3.10
V
Falling Edge
2.85 2.95
V
LDO3 Switch-Over Resistance
OUT3 to LDO3
2.5
3.8
Ω
Quiescent Power Consumption
VIN = 5.5V to 25V, FB3 = FB5 = SKIP# = 0V, Both
SMPSs are enabled
3.5
5
mW
REF Output Voltage
No Load
1.97 2.00 2.03
V
REF Load Regulation
FAULT DETECTION
0µA<I_REF<100µA
25
mV
Output Overvoltage Trip Threshold
OUT is above the target voltage at no load
Rising
109
113
117
%
Output Overvoltage Fault Propagation Delay FB = 1.0V
1
µs
Output Undervoltage Trip Threshold
OUT is below the target voltage at no load
70
75
78
%
Output Undervoltage Latch Blanking Time
FB = 0.5V
15
20
25
ms
4
FN9116.1
April 20, 2009