From: Keith Packard <keithp@keithp.com>
Date: Mon, 2 Dec 2013 07:25:31 +0000 (-0800)
Subject: Replace LDO output cap with 4.7uF
X-Git-Url: https://git.gag.com/?a=commitdiff_plain;ds=sidebyside;h=9124eea88dad87e0f7e5fe49360759b75a935a24;p=hw%2Ftelemini

Replace LDO output cap with 4.7uF

The TPS76133 requires at least 4.7uF of output capacitance to be
stable, and some noise was seen in the baro sensor with the 2.2uF
value.

Signed-off-by: Keith Packard <keithp@keithp.com>
---

diff --git a/telemini.pcb b/telemini.pcb
index 1a5f433..9c87423 100644
--- a/telemini.pcb
+++ b/telemini.pcb
@@ -1211,7 +1211,7 @@ Element["" "0402" "C21" "220pF" 1017.00mil 7.9182mm -62.00mil 0.9718mm 1 80 ""]
 
 	)
 
-Element["" "0402" "C6" "2.2uF" 5.1374mm 515.00mil -0.5400mm 11.00mil 0 80 ""]
+Element["" "0402" "C6" "4.7uF" 5.1374mm 515.00mil -0.5400mm 11.00mil 0 80 ""]
 (
 	Pad[-15.74mil -3.93mil -15.74mil 3.93mil 19.68mil 20.00mil 25.68mil "1" "1" "square"]
 	Pad[15.74mil -3.93mil 15.74mil 3.93mil 19.68mil 20.00mil 25.68mil "2" "2" "square"]
diff --git a/telemini.sch b/telemini.sch
index 0f1732e..d899c17 100644
--- a/telemini.sch
+++ b/telemini.sch
@@ -1077,7 +1077,7 @@ C 41000 42300 1 90 0 capacitor.sym
 T 40300 42500 5 10 0 0 90 0 1
 device=CAPACITOR
 T 41000 42300 5 10 0 0 0 0 1
-vendor_part_number=587-3153-1-ND
+vendor_part_number=587-2787-1-ND
 T 41000 42300 5 10 0 0 0 0 1
 footprint=0402
 T 41000 42300 5 10 0 0 0 0 1
@@ -1087,7 +1087,7 @@ loadstatus=smt
 T 41200 43100 5 10 1 1 180 0 1
 refdes=C6
 T 41000 42400 5 10 1 1 0 0 1
-value=2.2uF
+value=4.7uF
 T 41000 42300 5 10 0 1 0 0 1
 symversion=0.1
 }