ISL62881_14 Datasheet, PDF (6/35 Pages) Intersil Corporation – Single-Phase PWM Regulator for IMVP-6.5 Mobile CPUs and GPUs

ISL62881, ISL62881B
Electrical Specifications Operating Conditions: V_DD = 5V, T_A = -10°C to +100°C, f_SW = 300kHz, unless otherwise noted. Boldface
limits apply over the operating temperature range, -10°C to +100°C. (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
MAX
(Note 6) TYP (Note 6) UNITS
POWER GOOD AND PROTECTION MONITORS
PGOOD Low Voltage
PGOOD Leakage Current
PGOOD Delay
V_OL
I_PGOOD = 4mA
I_OH
PGOOD = 3.3V
tpgd
CLK_ENABLE# LOW to PGOOD HIGH
0.26 0.4
V
-1
1
µA
6.3 7.6 8.9 ms
UGATE DRIVER
UGATE Pull-Up Resistance
UGATE Source Current
UGATE Sink Resistance
UGATE Sink Current
LGATE DRIVER For ISL62881
R_UGPU
I_UGSRC
R_UGPD
I_UGSNK
200mA Source Current
BOOT - UGATE = 2.5V
250mA Sink Current
UGATE - PHASE = 2.5V
1.0 1.5
Ω
2.0
A
1.0 1.5
Ω
2.0
A
LGATE Pull-Up Resistance
LGATE Source Current
LGATE Sink Resistance
LGATE Sink Current
UGATE to LGATE Deadtime
LGATE to UGATE Deadtime
LGATE DRIVERS For ISL62881B
R_LGPU
I_LGSRC
R_LGPD
I_LGSNK
t_UGFLGR
t_LGFUGR
250mA Source Current
VCCP - LGATE = 2.5V
250mA Sink Current
LGATE - VSSP = 2.5V
UGATE falling to LGATE rising, no load
LGATE falling to UGATE rising, no load
1.0 1.5
Ω
2.0
A
0.5 0.9
Ω
4.0
A
23
ns
28
ns
LGATEa and b Pull-Up Resistance
LGATEa and b Source Current
LGATEa and b Sink Resistance
LGATEa and b Sink Current
UGATE to LGATEa and b
Deadtime
R_LGPU
I_LGSRC
R_LGPD
I_LGSNK
t_UGFLGR
250mA Source Current
VCCP - LGATEa and b = 2.5V
250mA Sink Current
LGATEa and b - VSSP = 2.5V
UGATE falling to LGATEa and b rising, no load
2.0 3
Ω
1.0
A
1
1.8
Ω
2.0
A
23
ns
LGATEa and b to UGATE
Deadtime
t_LGFUGR
LGATEa and b falling to UGATE rising, no load
28
ns
BOOTSTRAP DIODE
Forward Voltage
Reverse Leakage
PROTECTION
V_F
PVCC = 5V, I_F = 2mA
I_R
V_R = 25V
0.58
V
0.2
µA
Overvoltage Threshold
Severe Overvoltage Threshold
OC Threshold Offset
OV_H
OV_HS
VSEN rising above setpoint for >1ms
VSEN rising for >2µs
ISUM- pin current
150 200 240 mV
1.525 1.55 1.575 V
8.2 10.1 12 µA
Undervoltage Threshold
LOGIC THRESHOLDS
UV_f
VSEN falling below setpoint for >1.2ms
-355 -295 -235 mV
VR_ON Input Low
VR_ON Input High
VID0-VID6 and DPRSLPVR Input
Low
V_IL(1.0V)
V_IH(1.0V)
V_IL(1.0V)
0.3
V
0.7
V
0.3
V
VID0-VID6 and DPRSLPVR Input
High
V_IH(1.0V)
0.7
V
THERMAL MONITOR (For ISL62881B)
NTC Source Current
NTC = 1.3V
53 60 67 µA
6
FN6924.3
June 16, 2011