AP451 Diodes, Inc., AP451 Datasheet - Page 3

• Manufacturer Part Number: AP451
• Description: 2 Channel Linear Controller With Independent Enable Function
• Manufacturer: Diodes, Inc.

2 Channel Linear Controller with Independent Enable Function
Reference (REF)
Under voltage lockout (UVLO)
Output section
Enable function
Total device
Thermal Resistor
(1) MOSFET
Anachip Corp.
www.anachip.com.tw
Vout1=1.8V
Symbol
V
Electrical Characteristics
Typical Application Circuit
V
I
OUT1/2
V
V
I
I
V
θ
V
I
CCA
I
CL1
CL2
I
Vc1
LWT
SD
IH
UT
HT
IL
JA
IH
IL
100u
C7
100u
C10
V
Output Voltage Change with
Temperature
Upper Threshold Voltage (V
Lower Threshold Voltage (V
Hysteresis (V
CH1 Current Limit
CH2 Current Limit
EN Pin Logic Input Threshold
Voltage for EN1/2
EN pin Logic Input Current for
EN1/2
Average Supply Current
Shutdown Current
Thermal Resistor
Junction to Ambient
O1
/ V
C6
0.1u
Vin
O2
100u
C13
AF9410N
C11
0.1u
270
Connect to FB1 / FB2
R3
Parameter
Q3
CC
220
R4
10K
RG2
)
Vout1=V
C14
0.1u
RB2
0
6.8n
C1
FB1
×
CC
(T
CC
R1 and R3=180~2KΩ



A
)
1
)
=25ºC, V
1
2
3
4
+
EN1
SGND
OUT1
FB1
100K
R3
R4
T
T
I
T
V
V
High (regulator ON)
Low (regulator OFF)
High (regulator ON)
Low (regulator OFF)
SOP8
PDIP8
R5
AP451
C3
O(REF)
0.1u
A
A
A
CC
CC
= -20ºC ~ 25ºC
= 25ºC ~ 85ºC
= 25ºC



OUT2
=5V, V
=5V, V
CC
3/9
EN2
; Vout2=V
FB2
Vcc
=6V)
= 0.1mA
Conditions
8
7
6
5
NOUT2
NOUT3
FB2
=V
=V
×
FB2
FB3
RG1
RB1
10K



0.22u
100K
0
1
=0V
=0V
C12
R6
+
R2
R1



C2
6.8n
0.784
Min.
180
2.0
R2
25
25
-
-
-
-
-
-
-
-
-
-
-
-
Q4
AF9410N
100u
R1
390
C8
0.800
Typ.
-0.1
-0.2
100
180
120
2.1
2.0
1.3
-10
10
90
4
-
-
0.1u
C4
Rev. 1.0 Jun 30, 2005
AP451
0.816
Max.
500
0.6
±1
±1
6
C9
-
-
-
-
-
-
-
-
-
-
0.1u
C5
100u
O
O
Vout2=2.5V
Vc2
Unit
mV
mA
mA
mA
C/W
C/W
µA
µA
uA
%
%
V
V
V
V
V