M1AFS250-FGG256I Actel Corporation, M1AFS250-FGG256I Datasheet - Page 56

• Manufacturer Part Number: M1AFS250-FGG256I
• Description: Actel Fusion Family Of Mixed Signal Fpgas
• Manufacturer: Actel Corporation

Device Architecture
Table 2-18 • Electrical Characteristics
2- 40
Symbol
V
I
Δ
Δ
I
Note:
CC33A
PTBASE
OUT
VOUT
VOUT
*Data collected with 2N2222A.
Operation Current
Dropout Voltage*
V
Load Regulation
PTBase Current
Line Regulation
Output Voltage
1.5 V Voltage Regulator
The 1.5 V voltage regulator uses an external pass transistor to generate 1.5 V from a 3.3 V supply. The
base of the pass transistor is tied to PTBASE, the collector is tied to 3.3 V, and an emitter is tied to
PTBASE and the 1.5 V supplies of the Fusion device.
the 1.5 V voltage regulator to an external pass transistor.
Actel recommends using a PN2222A or 2N2222A transistor. The gain of such a transistor is
approximately 25, with a maximum base current of 20 mA. The maximum current that can be supported
is 0.5 A. Transistors with different gain can also be used for different current requirements.
CC33A
Parameter
= 3.3 V
Condition
Tj = 25ºC
Tj = 25ºC
Tj = 25ºC
Tj = 25ºC
Tj = 25ºC
Tj = 25ºC
I
I
I
I
VCC33A = 2.97 V to 3.63 V
I
VCC33A = 2.97 V to 3.63 V
I
VCC33A = 2.97 V to 3.63 V
I
I
I
I
I
I
I
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
= 1 mA
= 100 mA
= 0.5 A
= 1 mA to 0.5 A
= 1 mA
= 100 mA
= 500 mA
= 1 mA
= 100 mA
= 0.5 A
= 1 mA
= 100 mA
= 0.5 A
R e visio n 1
Figure 2-27 on page 2-33
1.425
Min
Typical
10.6
12.1
10.6
0.63
0.84
1.35
736
1.5
11
30
90
12
11
48
shows the hook-up of
1.575
Max
20
Units
mV/V
mV/V
mV/V
mA
mA
mA
mV
mA
µA
µA
V
V
V
V