ISL62881 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 7) TYP (Note 7) UNITS
POWER GOOD AND PROTECTION MONITORS
PGOOD Low Voltage
PGOOD Leakage Current
PGOOD Delay
V_OL
I_OH
tpgd
I_PGOOD = 4mA
PGOOD = 3.3V
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
(Note 6)
R_UGPU
200mA Source Current
1.0
1.5
Ω
UGATE Source Current
(Note 6)
I_UGSRC
BOOT - UGATE = 2.5V
2.0
A
UGATE Sink Resistance
(Note 6)
R_UGPD
250mA Sink Current
1.0
1.5
Ω
UGATE Sink Current (Note 6)
I_UGSNK
LGATE DRIVER For ISL62881
UGATE - PHASE = 2.5V
2.0
A
LGATE Pull-Up Resistance
(Note 6)
R_LGPU
250mA Source Current
1.0
1.5
Ω
LGATE Source Current
(Note 6)
I_LGSRC
VCCP - LGATE = 2.5V
2.0
A
LGATE Sink Resistance
(Note 6)
R_LGPD
250mA Sink Current
0.5
0.9
Ω
LGATE Sink Current (Note 6)
I_LGSNK
UGATE to LGATE Deadtime
t_UGFLGR
LGATE to UGATE Deadtime
t_LGFUGR
LGATE DRIVERS For ISL62881B
LGATE - VSSP = 2.5V
UGATE falling to LGATE rising, no load
LGATE falling to UGATE rising, no load
4.0
A
23
ns
28
ns
LGATEa and b Pull-Up
Resistance (Note 6)
R_LGPU
250mA Source Current
2.0
3
Ω
LGATEa and b Source
Current (Note 6)
I_LGSRC
VCCP - LGATEa and b = 2.5V
1.0
A
LGATEa and b Sink
Resistance (Note 6)
R_LGPD
250mA Sink Current
1
1.8
Ω
LGATEa and b Sink Current
(Note 6)
I_LGSNK
LGATEa and b - VSSP = 2.5V
2.0
A
UGATE to LGATEa and b
Deadtime
t_UGFLGR
UGATE falling to LGATEa and b rising, no
load
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
OV_H
OV_HS
VSEN rising above setpoint for >1ms
VSEN rising for >2µs
150 200 240
mV
1.525 1.55 1.575
V
OC Threshold Offset
ISUM- pin current
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
V_IL(1.0V)
0.3
V
6
FN6924.0
October 26, 2009