Electrical Characteristics: 0ûC < TA < 70ûC; 0ûC < TJ < 125ûC; VOUT2 ² 3.5V, 9V ² VCC1 ² 14V, 9V ² VCC2 ² 14V; 2.0V DAC Code
(VID4= VID3 = VID2 = VID1 = 0, VID0 = 1), CGATE(H) = CGATE(L) = CGATE = 3.3nF, COFF = 390pF; Unless otherwise stated.
PARAMETER
TEST CONDITIONS
MIN
25
TYP
50
MAX
100
UNIT
Input Pull-up Resistance
Pull-up Voltage
VID4, VID3, VID2, VID1, VID0
k½
V
5.48
5.65
5.82
■ GATE(H) and GATE(L)
High Voltage at 100mA
Low Voltage at 100mA
Rise Time
Measure VCC1/2 ÐGATE(L)/(H)
Measure GATE(L)/(H)
1.2
1.0
40
40
65
65
50
2.1
1.5
80
V
V
1.6V < GATE(H)/(L) < (VCC1/2 Ð 2.5V)
(VCC1/2 Ð 2.5V) > GATE(L)/(H) > 1.6V
GATE(H)<2V, GATE(L)>2V
GATE(L)<2V, GATE(H)>2V
Resistance to PGnd (Note 1)
ns
ns
ns
ns
k½
Fall Time
80
GATE(H) to GATE(L) Delay
GATE(L) to GATE(H) Delay
GATE pull-down
30
30
20
100
100
115
■ VCORE Overcurrent Protection
OVC Comparator Offset Voltage 0V < VOUT1 ² 3.5V
Discharge Threshold Voltage
77
86
101
0.3
mV
V
0.2
-7.0
100
0.25
0.1
VOUT1 Bias Current
0.2V ² VOUT1 ² 3.5V
COMP = 1V
7.0
µA
µA
OVC Latch Discharge Current
V
800
2500
■ PWM Comparator 1
PWM Comparator Offset Voltage 0V ² VFFB1 ² 3.5V
0.95
-7.0
1.06
200
0.1
1.18
300
7.0
V
Transient Response
VFFB1 Bias Current
V
FFB1 = 0 to 3.5V
ns
µA
0.2V ² VFFB1 ² 3.5V
■ COFF1
Off-Time
1.0
1.6
550
25
2.3
µs
Charge Current
Discharge Current
VCOFF1 = 1.5V
VCOFF1 = 1.5V
µA
mA
■ Power-Good Output
PWRGD Sink Current
V
FB1 = 1.7V, VPWRGD = 5V
0.5
5
4
15
12
-5
mA
%
PWRGD Upper Threshold
PWRGD Lower Threshold
PWRGD Output Low Voltage
% of nominal DAC code
% of nominal DAC code
VFB1 = 1.7V, IPWRGD = 500µA
8.5
-8.5
0.2
-12
%
0.3
V
■ Overvoltage Protection (OVP) Output
OVP Source Current
OVP Threshold
OVP = 1V
% of nominal DAC code
OVP = 1mA, VCC1 - VOVP
1
10
25
12
1.5
mA
%
5
8.5
1.1
OVP Pull-up Voltage
I
V
■ VI/O Switching Regulator Error Amplifier
VFB2 Bias Current
VFB2 = 0V
-1.0
15
0.1
30
60
80
1.0
60
µA
µA
µA
dB
COMP2 Source Current
COMP2 Sink Current
Open Loop Gain
COMP2 = 1.2V to 3.6V; VFB2 = 1V
COMP2=1.2V; VFB2=1.4V;
CCOMP2 = 0.1µF
30
120
5
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
