33887 Datasheet, PDF (3/37 Pages) Freescale Semiconductor, Inc – 5.0 A H-Bridge with Load Current Feedback

PIN CONNECTIONS
PIN CONNECTIONS
Tab
AGND 1
20
FS 2
19
IN1 3
18
V+ 4
17
V+ 5
16
OUT1 6
15
OUT1 ⁷
14
FB 8
13
PGND 9
12
PGND 10
11
Tab
EN
IN2
D1
CCP
V+
OUT2
OUT2
D2
PGND
PGND
Figure 3. 33887 Pin Connections
Table 1. 33887 HSOP PIN DEFINITIONS
A functional description of each pin can be found in the Functional Pin DescriptionS section, page 21.
Pin
Pin Name
1
AGND
Formal Name
Analog Ground
Definition
Low-current analog signal ground.
2
FS
Fault Status for H-Bridge Open drain active LOW Fault Status output requiring a pull-up resistor to
5.0 V.
3
IN1
Logic Input Control 1
Logic input control of OUT1 (i.e., IN1 logic HIGH = OUT1 HIGH).
4 , 5, 16
V+
Positive Power Supply ^{Positive supply connections}
6, 7
OUT1
H-Bridge Output 1
Output 1 of H-Bridge.
8
FB
Feedback for H-Bridge ^{Current sensing feedback output providing ground referenced 1/375th}
(0.00266) of H-Bridge high-side current.
9 – 12
PGND
Power Ground
High-current power ground.
13
D2
Disable 2
Active LOW input used to simultaneously tri-state disable both H-Bridge
outputs. When D2 is Logic LOW, both outputs are tri-stated.
14 , 15
OUT2
H-Bridge Output 2
Output 2 of H-Bridge.
17
CCP
Charge Pump Capacitor External reservoir capacitor connection for internal charge pump capacitor.
18
D1
Disable 1
Active HIGH input used to simultaneously tri-state disable both H-Bridge
outputs. When D1 is Logic HIGH, both outputs are tri-stated.
19
IN2
Logic Input Control 2
Logic input control of OUT2 (i.e., IN2 logic HIGH = OUT2 HIGH).
20
EN
Enable
Logic input Enable control of device (i.e., EN logic HIGH = full operation, EN
logic LOW = Sleep Mode).
Tab/Pad
Thermal
Interface
Exposed Pad Thermal
Interface
Exposed pad thermal interface for sinking heat from the device.
Note Must be DC-coupled to analog ground and power ground via very low
impedance path to prevent injection of spurious signals into IC substrate.
Analog Integrated Circuit Device Data
Freescale Semiconductor
33887
3