33887 Datasheet, PDF (4/37 Pages) Freescale Semiconductor, Inc – 5.0 A H-Bridge with Load Current Feedback

PIN CONNECTIONS
Transparent Top View of Package
NC ¹
D1 ²
IN2 ³
EN ⁴
V+ ⁵
V+ 6
NC 7
AGND 8
FS 9
NC 10
28 _NC
27 _D2
26 _PGND
25 _PGND
24 PGND
23 PGND
22 PGND
21 PGND
20 FB
19 NC
Figure 4. 33887 Pin Connections
Table 2. PQFN PIN DEFINITIONS
A functional description of each pin can be found in the Functional Pin DescriptionS section, page 21.
Pin
1, 7, 10, 16,
19, 28, 31
Pin Name
NC
Formal Name
No Connect
Definition
No internal connection to this pin.
2
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.
3
IN2
Logic Input Control 2
Logic input control of OUT2 (i.e., IN2 logic HIGH = OUT2 HIGH).
4
EN
Enable
Logic input Enable control of device (i.e., EN logic HIGH = full operation,
EN logic LOW = Sleep Mode).
5, 6, 12, 13, 34, 35
V+
Positive Power Supply ^{Positive supply connections.}
8
AGND
Analog Ground
Low-current analog signal ground.
9
FS
Fault Status for H-Bridge ^{Open drain active LOW Fault Status output requiring a pull-up resistor to}
5.0 V.
11
IN1
Logic Input Control 1
Logic input control of OUT1 (i.e., IN1 logic HIGH = OUT1 HIGH).
14, 15, 17, 18
OUT1
H-Bridge Output 1
Output 1 of H-Bridge.
20
FB
Feedback for H-Bridge Current feedback output providing ground referenced 1/375th ratio of
H-Bridge high-side current.
21– 26
PGND
Power Ground
High-current power ground.
27
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.
29, 30, 32, 33
OUT2
H-Bridge Output 2
Output 2 of H-Bridge.
36
CCP
Charge Pump Capacitor ^{External reservoir capacitor connection for internal charge pump}
capacitor.
Pad
Thermal
Exposed Pad Thermal Exposed pad thermal interface for sinking heat from the device.
Interface
Interface
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.
33887
4
Analog Integrated Circuit Device Data
Freescale Semiconductor