AAT4901IJS-1-T1 ANALOGICTECH [Advanced Analogic Technologies], AAT4901IJS-1-T1 Datasheet - Page 14

• Manufacturer Part Number: AAT4901IJS-1-T1
• Description: Buffered Power Full-Bridge
• Manufacturer: ANALOGICTECH [Advanced Analogic Technologies]

Dual Channel, High Speed,
High Current 3-State Line Driver
The AAT4901-3 is ideally suited for dual channel, high
speed, high current 3-state line driver applications such
as CCD clock drivers. The low quiescent power dissipa-
tion makes this part attractive in battery powered prod-
ucts. The 3A peak drive capability also makes the
AAT4901-3 an excellent choice for driving high speed
capacitive lines. The 20ns fast switching/delay time
allows clocking speeds up to 10MHz.
14
FastSwitch
V
V
V
V
BAT
BAT
BAT
BAT
+
-
+
-
TM
Field winding
Field winding
Lf
Lf
Q1
Q3
Q1
Q3
Period (A)
Period (C)
V
V
BAT
BAT
+
-
Figure 7: Full-Bridge Motor Drive Control.
armature
armature
La
La
Field winding
Lf
w w w . a n a l o g i c t e c h . c o m
Ia
Ia
Q2
Q4
Q2
Q4
Q1
Q3
Period (E)
V
V
Dual Low-Side MOSFET Driver
The AAT4901-3 is also ideally suited for dual low-side
MOSFET driver applications due to its dual independent
half-bridge output configuration. It can be used in a
push-pull topology as illustrated in Figure 9 or in other
applications which require the ability to drive the
MOSFETs quickly, due to the AAT4901's extremely low
R
(20ns typ.)
V
V
BAT
BAT
BAT
BAT
DS(ON)
armature
+
+
-
-
La
(220/160mΩ typ.) and very fast propagation time
Field winding
Field winding
Ia
Q2
Q4
Lf
Lf
Buffered Power Full-Bridge
Q1
Q3
Q1
Q3
PRODUCT DATASHEET
Period (D)
Period (B)
AAT4901
armature
armature
La
La
4901.2008.03.1.0
Ia
Ia
Q2
Q4
Q2
Q4