PIN CONNECTIONS
PIN CONNECTIONS
1
54
PHASEA
PGND
EN1
VPWR
N/C
N/C
VLS
N/C
N/C
2
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
.35
34
33
32
31
30
29
28
3
4
EN2
RST
N/C
5
6
7
PUMP
VPUMP
VSUP
PHASEB
PHASEC
PA_HS
PA_LS
VDD
PB_HS
PB_LS
INT
CS
SI
SCLK
SO
PA_BOOT
PA_HS_G
PA_HS_S
PA_LS_G
PA_LS_S
PB_BOOT
PB_HS_G
PB_HS_S
PB_LS_G
PB_LS_S
PC_BOOT
PC_HS_G
PC_HS_S
PC_LS_G
PC_LS_S
N/C
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
Transparent
Top View
PC_LS
PC_HS
AMP_OUT
AMP_N
AMP_P
OC_OUT
VLS_CAP
GND1
GND0
VSS
OC_TH
Figure 3. 33937 Pin Connections
Table 2. 33937 Pin Definitions
A functional description of each pin can be found in the Functional Pin Description section beginning on page 23.
Pin
Pin Name Pin Function
Formal Name
Definition
Totem Pole output of Phase A comparator. This output is low when the
voltage on PA_HS_S (Source of High Side FET) is less than 50% of VSUP
1
PHASEA
Digital Output
Phase A
Power ground for charge pump
2
3
PGND
EN1
Ground
Power Ground
Enable 1
Logic signal input must be high (ANDed with EN2) to enable any gate drive
output.
Digital Input
Logic signal input must be high (ANDed with EN1) to enable any gate drive
output
4
EN2
Digital Input
Enable 2
Reset input
5
RST
N/C
Digital Input
–
Reset
Do not connect these pins
6, 33, 49,
50, 52, 53
No Connect
Charge pump output
7
PUMP
Power Drive
Out
Pump
Charge pump supply
8
9
VPUMP
VSUP
Power Input
Analog Input
Voltage Pump
Supply Voltage
Supply voltage to the load. This pin is to be connected to the common
Drains of the external High Side FETs
Totem Pole output of Phase B comparator. This output is low when the
voltage on PB_HS_S (Source of High Side FET) is less than 50% of VSUP
10
11
PHASEB
PHASEC
Digital Output
Digital Output
Phase B
Phase C
Totem Pole output of Phase C comparator. This output is low when the
voltage on PC_HS_S (Source of High Side FET) is less than 50% of VSUP
33937
Analog Integrated Circuit Device Data
Freescale Semiconductor
4
FREESCALE [ Freescale ]
